Answers
Answer:
4-5
Step-by-step explanation:
PEMDAS
Parentheses are first in the order of operations so 4-5 would be your first step.
Related Questions
Choose the multiplicative inverse of 5/3
Answers
Answer: I think that would be 5x3
Step-by-step explanation:
Micah found the least common multiple of 8 and 12. His work is shown below.
Multiples of 8: 8, 12, 16, 20, 24, 28, . . .
Multiples of 12: 12, 24, 36, 48, 60, . . .
The least common multiple is 12.
What is Micah’s error?
Micah listed some values that were not multiples.
Micah listed factors of each number instead of multiples.
Micah should have multiplied 8 and 12 to find the least common multiple.
Micah selected a multiple that is not the least of the common multiples.
Answers
Answer: The answer is A
Step-by-step explanation:
12 is NOT a multiple of 8. She only listed multiples for 12 not 8.
Answer:
the anwer is a
Step-by-step explanation:
some of the numbers were not factors
The diameter of the Sun is 1.4 x 10⁶ km. The diameter of the planet Mars is 7000 km. What is the approximate ratio of the diameter to the Sun to the diameter of Mars? A.) 5 x 10^-3 B.) 2 x 10³ C.) 2 x 10² D.) 5 x 10²
Answers
Answer:
C.) 2×10²
Step-by-step explanation:
(Sun dia) / (Mars dia) = (1.4 x 10⁶ km) / (0.7 × 10⁴ km) = (1.4/0.7) × 10²
The ratio of diameters is about 2 × 10².
_____
The applicable rule of exponents is ...
(a^b)/(a^c) = a^(b-c)
__
The diameter of Mars can be expressed several ways.
7000 = 7×1000 = 0.7×10,000 = 0.7×10⁴
Answer: 2 x 10^2
Step-by-step explanation:
the other person is wrong :I
A person whose eye level is 11 ft above the ground is looking at a building. The angle of elevation to the top of the building is 22 degrees and the angle of depression to the bottom of the building is 34 degrees. What is the height (in feet) of the building? Round your answer to the nearest foot.
Answers
Answer:
The building has a height of 14 feet.
Step-by-step explanation:
At first we construct the geometrical diagram respective to the person-building system, whose result can be seen in the attached image. We proceed to describe each variable:
[tex]h[/tex] - Height of the eye level above the ground, measured in feet.
[tex]H[/tex] - Height of the building, measured in feet.
[tex]\alpha[/tex] - Angle of elevation, measured in sexagesimal degrees.
[tex]\beta[/tex] - Angle of depression, measured in sexagesimal degrees.
[tex]r[/tex] - Distance between eye level and the bottom of the building, measured in feet.
[tex]r'[/tex] - DIstance between eye level and the top of the building, measured in feet.
By using trigonometric ratios and functions we find that height of the building is represented by the following formula:
[tex]H = r\cdot \sin \beta + r'\cdot \sin \alpha[/tex] (Eq. 1)
But [tex]r[/tex] and [tex]r'[/tex] can be obtained by these expressions:
[tex]r = \frac{h}{\sin \beta}[/tex] (Eq. 2)
[tex]r' = \frac{r\cdot \cos \beta}{\cos \alpha}[/tex] (Eq. 3)
By (Eq. 2) in (Eq. 3):
[tex]r'= \frac{h}{\cos \alpha \cdot \tan \beta}[/tex] (Eq. 3b)
Now, we expand (Eq. 1) by (Eqs. 2, 3b):
[tex]H = h + h \cdot \tan \alpha \cdot \tan \beta[/tex]
[tex]H = h\cdot (1+\tan \alpha \cdot \tan \beta)[/tex] (Eq. 4)
If we know that [tex]h = 11\,ft[/tex], [tex]\alpha = 22^{\circ}[/tex] and [tex]\beta = 34^{\circ}[/tex], the height of the building is:
[tex]H = (11\,ft)\cdot (1+\tan 22^{\circ}\cdot \tan 34^{\circ})[/tex]
[tex]H = 13.998\,ft[/tex]
The building has a height of 14 feet.
The construction crew places a sign every 1 3/4 miles on a stretch of a road that is 8 3/4 long. How many signs will that use
Answers
Answer:
5
Step-by-step explanation:
I big brain
What is the purpose of properties? for math
20 points HELP ASAP!!!!!!!!
Answers
Answer:
Remembering the properties of numbers is important because you use them consistently in pre-calculus. The properties aren't often used by name in pre-calculus, but you're supposed to know when you need to utilize them.
Which is logically equivalent to the converse of a conditional statement? The original conditional statement the inverse of the original conditional statement the contrapositive of the original conditional statement the converse of the converse statementWhich is logically equivalent to the converse of a conditional statement? the original conditional statement the inverse of the original conditional statement the contrapositive of the original conditional statement the converse of the converse statement
Answers
Answer:
The correct option is;
The inverse of the original conditional statement
Step-by-step explanation:
The converse of a conditional statement is given as follows;
Conditional statement: If p then q [tex]{}[/tex] p → q
The converse of the conditional statement: If q then p [tex]{}[/tex] q → p
The contrapositive of the conditional statement: If not q then not p [tex]{}[/tex] ~q → ~p
Therefore, the conditional statement is logically equivalent to its contrapositive
The inverse of the conditional statement: If not p, then not q [tex]{}[/tex] ~p → ~q
Similarly
The converse of the conditional statement is equivalent to the inverse of the conditional statement.
Answer:
b
Step-by-step explanation:
4 times a number is 21 less than the square of that number. Find the positive solution
Answers
Answer:
Step-by-step explanation:
Let the number be x
by given condition,
4x = (x)² - 21
4x = x²- 21
0 = x² - 4x - 21
0 = x² - 7x + 3x - 21
0 = x ( x-7) + 3 ( x - 7)
0 = (x+3)(x-7)
hence
x + 3 =0.....
x = -3---------1
x - 7 = 0
x = 7 ------------2
we got value of x from 1 and 2.. but the question says positive value of x.
hence, x = 7 is the required value of x.
what’s the answer to X + 0.2 = -0.8
Answers
Answer:
x=-1
Step-by-step explanation:
X+0.2=-0.8
x=-1
x = -1
Marcelino bought balloons to sell at lunches to raise money for charity
Item
Thirty Balloons
Ribbon
Helium Tank Rental
Cost
$22.50
$7.50
$15.00
Marcelino claims he will raise a lot of money by selling each balloon for $1.25. Which statement is true about the
amount of money he will make it he sells all of the balloons?
Marcelino will only make a profit of $7.50; each balloon costs $1.50, so he's making S 25 on each balloon
Marcelino will break even; his cost will equal his profits
Marcelino will have $7.50: his costs are more than his profits
Marcelino will raise $45.00, each balloon raises $1.50
Answers
Marcelino will bear a loss of $7.5 and the correct statement is "Marcelino will have a loss of $7.50: his costs are more than his profits".
Given information:
The requirements and cost of making the ballons is:
Item Cost
Thirty Balloons $22.50
Ribbon $7.50
Helium Tank Rental $15.00
Marcelino sells balloons at the rate of $1.25 per balloon.
The total cost of creating 30 balloons will be,
[tex]22.5+7.5+15=\$\;45[/tex]
Now, after selling 30 balloons, he will earn,
[tex]1.25\times 30=\$\;37.5[/tex]
The earning is less than the cost of making the balloons.
So, Marcelino will bear the loss. The loss can be calculated as,
[tex]45-37.5=\$\;7.5[/tex]
Therefore, Marcelino will bear a loss of $7.5 and the correct statement is "Marcelino will have a loss of $7.50: his costs are more than his profits".
For more details, refer to the link:
https://brainly.com/question/984538
Answer:
I think C
Step-by-step explanation:
marcelio will have -$7.50; his costs r more then his profits
Find the value of the expression (look at the image)
Answers
Answer:
1
Step-by-step explanation:
Anything raised to the power of zero is one. And 1^-2 is is 1.
g (x) = 4n - 5
h(x) = -3n^2 - 5
find g(3)+h(2)
Answers
Answer:
g (3) +h (2) = 3g + 2h
i have trouble with distributive property
Answers
Answer:
try the website math way :)
Step-by-step explanation:
at 11 hours, 42 minutes and 5 hours, 46 minutes
Answers
Answer
https://zoom.us/j/99385592884?pwd=ajVOcXZSbGcyT3N3N0kxQm5Zek81Zz09er:
Step-by-step explanation:
Answer:
17 hours and 28 min
Step-by-step explanation:
plz help ill mark brainliest anyone does this right plz help
Answers
Answer:
1, My friend’s house is about 160940 cm from mine
2, My bedroom is 2940 sq ft
3, My fish tank holds 24000 ml
4, I ran 6378.1 km this year!
5, The national park in my state is 322280000 cubic miles
Step-by-step explanation:
give da crown XD
liner equations can have fractions with variables on top
Answers
Answer:
yes
Step-by-step explanation:
How do you Solve (−7) ⋅ (−4)
Answers
Answer:
Step-by-step explanation:
So that " ⋅ " sign is just the multiplication, and always remember:
WHENEVER YOU MULTIPLY TWO NEGATIVE NUMBERS THE PRODUCT IS ALWAYS POSITIVE
So you just multiply 7 and 4 which is 28 and leave it be.
If you need more help, comment.
I'm sorry for my wrong explanation.
I NEED HELP PLEASE THANK YOU :)))
Rewrite the equation into slope intercept form. y + 7 = -1/2(x + 4)
Answers
Answer:
[tex] y = - \frac{1}{2} x - 9[/tex]
Step-by-step explanation:
[tex]y + 7 = - \frac{1}{2} (x + 4) \\ \\ y + 7 = - \frac{1}{2} x + (- \frac{1}{2}) \times 4 \\ \\ y = - \frac{1}{2} x - 2 - 7 \\ \\ y = - \frac{1}{2} x - 9[/tex]
can somebody help me with a question for math
Answers
Answer:
sure whats the question
Step-by-step explanation:
Solve the equation using the Properties of Equality.
Answers
Answer:
Step-by-step explanations:
A square is constructed with an area of 18 square feet what is the approximate length of one side?
Answers
Answer:
The answer is about 4.242 feet
How do you solve 18x+27=117
Answers
Answer:
x = 5
Step-by-step explanation:
18x = 117 - 27
18x = 90
x = 90/18
x = 5
Answer:
18x + 27 = 117
collect like terms
18x = 117 - 27
18x = 90
divide both sides by 18
x = 5
The product of 4 and a number plus 17 is 5
Answers
Answer:
4x+17=5
Step-by-step explanation:
The product of 4 and a number: Product means multiplication.
Therefore, we have 4 and any variable of your choice.(I used x)
plus 17: +17
Now we have 4x+17
Is: means equal (=)
Now we plug in what we have: 4x+17=5
Hope this helps! :)
Yo could y’all help me with 6th grade math
Answers
Answer:
260
570
850
920
410
710
660
120
that all for now they out of order
Step-by-step explanation:
Answer:
2601204105705901908501003009205302004106309607108101000660810640Step-by-step explanation:
You better give brainliest for that also please refrain from these type of questions. I bet people would apprieate it
Which step was the first error made? -3\left(2x-3\right)=33−3(2x−3)=33 -6x+6=33−6x+6=33 step 1 -6x=27−6x=27 step 2 \frac{\left(-6x\right)}{-6}=\frac{\left(27\right)}{-6} −6 (−6x) = −6 (27) step 3 x=-4.5x=−4.5 step 4 Step 3 Step 2 Step 1
Answers
Given:
The equation is
[tex]-3(2x-3)=33[/tex]
The incorrect solution steps are given.
To find:
The first error.
Solution:
We have,
[tex]-3(2x-3)=33[/tex]
Using distributive property, we get
[tex]-3(2x)-3(-3)=33[/tex]
[tex]-6x+9=33[/tex]
The given step 1 is [tex]-6x+6=33[/tex], which is not correct.
Therefore, there is first error in step 1 because the distribution property is not used properly.
Hence, the correct option is D.
Craig is 24 years younger than his mother. Together their ages total 56 years. How old is each person?
Answers
Answer:
together their year=56 years
younger then his mother=24
56-24=32
The length of a rectangular piece of cardboard is 1 4/5 meters. If its width is 2/3 of its length, what is the width of the cardboard?
Answers
Answer:
6/5 or 1.2
Step-by-step explanation:
First, you need to multiply the length by how much the width is of the length, which is 2/3, so you multiply 1 4/5 by 2/3 and you get 6/5. If you want the decimal form, then the answer will be 1.2.
The integer 4 is considered all of the following except _____.
a constant
an expression
a term
a variable
Answers
Answer:
its a constant
Step-by-step explanation:
What is 0.00308 written in scientific notation? Group of answer choices
Answers
Answer:
3.08 x 10^-3
Step-by-step explanation:
when putting into scientific notation, you must make it to where there is one number to the left of the decimal. If you move the decimal left, it equals a negative power, if you move it right, it equals a positive power.
What is the solution to the inequality 3(2x-1) > 4x - 2
Answers
Answer:
x>1/2
Step-by-step explanation: