without using a calculator or mathematical table sove 187²-87²
Answers
Hope this helps
Related Questions
Lucy brought 4 of her scarves to a secondhand store to sell. She was paid the same amount
of cash for each scarf. Before she left, Lucy spent $10.50 of her earnings on a used sweater.
She had $7.50 remaining. What was the value of each scarf?
Answers
The value of each scarf from the sales will be $4.50.
Since Lucy spent $10.50 of her earnings on a used sweater and she had $7.50 remaining, the total amount that she made from the sales will be:
= $10.50 + $7.50
= $18.00
Since she sold 4 scarves, the cost of each scarf will be:
= $18.00 / 4
= $4.50
Therefore, the value of each scarf will be $4.50.
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2xy-yz=8 solve for z
Answers
The solution of the equation in terms of z will be; z = 2x - 8/y
What is an equation?An equation is an expression that shows the relationship between two or more numbers and variables.
A mathematical equation is a statement with two equal sides and an equal sign in between. An equation is, for instance, 4 + 6 = 10. Both 4 + 6 and 10 can be seen on the left and right sides of the equal sign, respectively.
We are given the equation as;
2xy-yz=8
Now we have to solve for z;
2xy-yz=8
-yz = 8 - 2xy
Then divide by y on both sides;
z = 2xy/y - 8 / y
z = 2x - 8/y
Learn more about equations here;
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fifteen minutes past eight in the evening on a 24 hour clock
Answers
Answer:
20:15
Step-by-step explanation:
Answer:
A quarter past eight.
Step-by-step explanation:
Which math expression means "the quotient of an unknown number and 18"?
A. x ÷ 18
B. 18 • x
C. x – 18
D. x + 18
Answers
Answer:
[tex]option \: b.[/tex][tex]18•x[/tex]
Answer:
Step-by-step explanation:
Hi hi! I'd appreciate the help, and I'll give Brainliest. I need this now please!
Answers
Answer:
Step-by-step explanation:
There are a few different ratios you can use:
2:1 = 12:6 = 24:12
3:1 = 12:4 = 36:12
4:1 = 12:3 = 48:12
5:1 = 15:3 = 60:12
These are just a few i could give
The ratio of the height of an object in a photograph to the actual height is 1:200. The height of a statue in the photograph is 5 cm. How tall is the statue?
Answers
Answer:
1,000 cm
Step-by-step explanation:
5 x 200 = 1000
I keep getting D wrong
Answers
:((( don’t know what it is supposed to be.
7+ За = 12 + 2а
Can anyone give the answer quick!
Answers
Answer:
A=5
Step-by-step explanation:
Answer:
A=5
Step-by-step explanation:
7+3a=12+2a
-2a -2a
7+a=12
-7 -7
a=5
Kevin picked 3/4 of a pound of strawberries. That afternoon, his sister ate 2/3 of the strawberries Kevin picked. How many pounds of strawberries did Kevin's sister eat? Use a visual model (such a number line, area diagram or pattern blocks) to find the answer to the problem. State the answer and explain how you determined the answer from your model.
Answers
Answer:
1/12 pounds of strawbebbies left.
Step-by-step explanation:
Solve the inequality graphically.
3-* > 6*
a. x < 1
b.X>1
C.X>0
d. x <0
Answers
Answer:
Simplify the expression.
−
729
Step-by-step explanation:
your wlecome
the world population in 2016 was estimated to be 7.4 billion people and it is increasing by about 1.1% per year. assume that this percentage growth rate remains constant through 2030 explain why the population is an exponential function of time. what would you expect the world population to be in 2030
Answers
Answer:
1
Step-by-step explanation: i guessed
The first day of Sam's vacation was a Monday.
What was the day of the week on Sam's 36
day of vacation?
Answers
Answer:
I think it was monday also
Answer:
The day of the week on Sam's 36th
day of vacation would be Tuesday.
Light travels at a speed of $1.9\ \times\ 10^5$ miles per second. How far, in miles, does light travel in $30$ seconds?
Answers
9514 1404 393
Answer:
5.7×10^6 mi
Step-by-step explanation:
(1.9×10^5 mi/s) × (3.0×10^1 s) = 5.7×10^6 mi
_____
Additional comment
When I can see that the product will have a mantissa that has a value greater than 10 or less than 1, I like to adjust the factors so the mantissa of the product comes out in the range 1-10. Here, we could adjust 1.9 to 0.19, or 30 to 3.0. We chose the latter.
Moving the decimal point of 30.0 1 place to the left means we increase the corresponding exponent by 1 (from 0 to 1). 30.0×10^0 = 3.00×10^1
solve plsw brainliest
Answers
Answer:
40%
Step-by-step explanation:
2/5 = 40/100 or 40%
When converted to a household measurement, 9 kilograms is approximately equal to a
Answers
Answer: About 317.4 oz or 19 lbs! Pls Brainly Thx :D
Answer:
D) 19.8 lbs
Explanation:
1kg in household measurement is equal to 35.274 ounces. 35.274*9=317.466 ounces.
1kg is also equal to 2.205 lbs. 9*2.205=19.8416
9 kg is also equal to 9000 grams, but grams are not a part of the household measurement system
a) 9000 grams. b) 9000 ounces. c) 19.8 ounces. d) 19.8 pounds.
This leaves us with 19.8 lbs
If 6 things cost $1000, how much does 1 cost?
Answers
Answer:
$166.66
Step-by-step explanation:
if 6 items =$1000
1 item= ?
1item×$1000/6items
=$166.66
A living room is a compound shape made of two rectangles like the one
below. How many square feet of carpet would you need to cover the entire room?
Answers
Answer:
Step-by-step explanation:
702
<1 and <2 are complementary. Solve for the measure of <1.
<1 = 12x + 4
<2 = 9x + 2
A. 52
B. 4
C. 38
D. 8.3
Answers
Please help as soon as possible :))
Answers
Answer:
x=45 y=60
Step-by-step explanation:
the picture is kinda blurry but if im seeing it correctly its ^^^
Please need it fast will give brainliest At 5:00 A.M. the temperature in Phoenix, Arizona, was already 80°F. By 3:00 P.M. the
temperature had risen to 97°F. What is the difference in the temperatures?
Answers
Answer:
The difference is 17 degrees.
Step-by-step explanation:
You want to take your final temperature which in this case is 97°F, and then subtract it from the starting temperature which is 80°F. Doing this will help you find your difference.
97-80 = 17°F
I hope this helps! :)
81 x
3y + 72x
2y
2 + 16xy
3
Answers
Answer:
Step 1 :Equation at the end of step 1
((81•(x4))-((72•(x2))•(y2)))+24y4
Step 2 :
Equation at the end of step 2 :
((81 • (x4)) - ((23•32x2) • y2)) + 24y4
Step 3 :
Equation at the end of step 3 :
(34x4 - (23•32x2y2)) + 24y4
Step 4 :Trying to factor a multi variable polynomial
4.1 Factoring 81x4 - 72x2y2 + 16y4
Try to factor this multi-variable trinomial using trial and error
Found a factorization : (9x2 - 4y2)•(9x2 - 4y2)
Detecting a perfect square :
4.2 81x4 -72x2y2 +16y4 is a perfect square
It factors into (9x2-4y2)•(9x2-4y2)
which is another way of writing (9x2-4y2)2
How to recognize a perfect square trinomial:
• It has three terms
• Two of its terms are perfect squares themselves
• The remaining term is twice the product of the square roots of the other two terms
Trying to factor as a Difference of Squares:
4.3 Factoring: 9x2-4y2
Put the exponent aside, try to factor 9x2-4y2
Theory : A difference of two perfect squares, A2 - B2 can be factored into (A+B) • (A-B)
Proof : (A+B) • (A-B) =
A2 - AB + BA - B2 =
A2 - AB + AB - B2 =
A2 - B2
Note : AB = BA is the commutative property of multiplication.
Note : - AB + AB equals zero and is therefore eliminated from the expression.
Check : 9 is the square of 3
Check : 4 is the square of 2
Check : x2 is the square of x1
Check : y2 is the square of y1
Factorization is : (3x + 2y) • (3x - 2y)
Raise to the exponent which was put aside
Factorization becomes : (3x + 2y)2 • (3x - 2y)2
Final result :
(3x + 2y)2 • (3x - 2y)2
Step-by-step explanation:
Answer:
81x+16y
should be the correct one
34-18-(-23) write as a single number
Answers
Answer: 39
Step-by-step explanation: 34-18=16+23=39. Remember, 2 negatives equals a positive.
Answer: 39 cus 34-18=16+23=39
Step-by-step explanation:
STEP By Step Explaination needed
NO sp.am
No Go.ogle
Solve it
[tex]\frac{5}{11} + \frac{3}{11} [/tex]
Answers
Answer:
8/11
Step-by-step explanation:
5+3=8
Answer:
[tex]\sf\huge\longmapsto \: \frac{8}{11} [/tex]
Step-by-step explanation:
[tex]\sf\huge\longmapsto \: \: \frac{5}{11} + \frac{3}{11} [/tex]
[tex]\sf\huge\longmapsto \: \frac{5 + 3}{11} [/tex]
[tex]\sf\huge\longmapsto \: \frac{8}{11} [/tex]
please help me with this sum
Answers
Step-by-step explanation:
2667
1884
1953
782
2046
3105
8559
5368
963
3367
Answer:
381 x 7 = 2667
471 x 4 = 1884
651 x 3 = 1971
391 x 3 = 1173
341 x 6 = 2046
Hope its help full
What are the terms in the expression 2d + 7 + 5f?
ASAP
2 and 5
d and f
2d, 7, and 5f
2, 7, and 5
Answers
2d, 7, and 5f i hope this helps
Answer:2d,7,and 5f
Step-by-step explanation:
There are 32 students in the 6th grade at Garden Valley Middle School. Eight of them have freckles. What is the ratio of 6th graders with freckles to the total number of 6th graders?
A.
1:4
B.
4:1
C.
1:3
D.
3:1
Answers
Answer:
A. 1:4 is the answer of this question
Answer:
a
Step-by-step explanation:
there's a pattern that goes along with the 32 students in the 6th grade. since 8 is a factor (or multiple?) of 32, and 8x4 is 32, we can simplify.
so, 8 is the first multiple of 32 and 32 is the fourth. if we simplify that, we get 1:4.
the answer is 1:4.
please help with geometry homework
Answers
A cylinder with a radius of 10ft has a volume of 2, 198.0013
What is the height of the cylinder
Answers
Answer:
~7 ft
Step-by-step explanation:
2,198.0013 = pi × 10^2 × h
h = 2198.0013 / (3.1416 × 100)
h = 6.996 ft ~ 7 ft
Place the <,> or = symbols between the following:
A) 4/3 ? 2/3
B) 4/3 ? 80%
C.) 3/4 ? 65%
D.) 4/8 ? 50 %
Please help
Answers
19. As part of a cookie recipe, you mix cup of chocolate chips for every 1 cups of
sugar. How much chocolate chips do you need if you use a whole cup of sugar?
Answers
Answer: 1 cup
Step-by-step explanation: they have a 1:1 ratio
Answer:
1
Step-by-step explanation:
If you have 1 cup of chocolate chips for every 1 cup of sugar, that is a 1:1 ratio
A whole cup of sugar is equal to 1 cup of sugar
Therefore, you will have 1 cup of choloate chips for the whole cup of sugar