What is the solution to the following equation?
x^2 + 5x + 7 = 0
A. x = -5±√-3 /2
B. x = -5±√53 /2
C. x = -3±√-7 /2
D. x = 3±√25 /2
Answers
Answer:
A
Step-by-step explanation:
using the quadratic formula
in the picture above
Related Questions
write the equation of the circle with a center at ( 2, -4 ) and a radius of 4
Answers
[tex]\textit{equation of a circle}\\\\ (x- h)^2+(y- k)^2= r^2 \qquad center~~(\stackrel{2}{ h},\stackrel{-4}{ k})\qquad \qquad radius=\stackrel{4}{ r} \\\\\\\ [x-2]^2~~ + ~~[y-(-4)]^2~~ = ~~4^2\implies (x-2)^2~~ + ~~(y+4)^2~~ = ~~16[/tex]
What is the area of the following figure?
35 mm 2
3 mm 2
75 mm 2
105 mm 2
Answers
Answer: [tex]75mm^2[/tex]
Step-by-step explanation:
The formula for the area of a paralellogram is:
bh=a
Where
b is the base (15 for this)
h is the height (5 for this)
and a is the area
Let's sub our values into the formula
[tex]bh=a\\(15)(5)=a[/tex]
Now solve
[tex](15)(5)=a\\75=a[/tex]
ans is C
can someone help mepleace
Answers
Answer:Click on the file below
Step-by-step explanation:
Jack went to baseball practice at 5:45 p.m. He returned home at 8:22 p.m. How long was he gone for? SHOW YOUR WORK PLEASE
Answers
Answer:
2 hours and 37 mins
Step-by-step explanation:
you want to get to a full hour so 5:45 closes hour would be 15 minutes later which would be 6:00 and then you add 2 hours which would be 8:00 and you have 22 minutes to get 822 p.m. so you add the minutes together 15 + 22 which you'll get 37 and you'll have the 2 hours on the side so it would be 2 hours and 37 minutes
pls help me worth 50 points + brainliest
(i only can give brainliest if 2 PEOPLE answer)
Answers
Answer:
The answer would be four dresses.
Step-by-step explanation:
Step 1. Do 16 divided by 3.67
Step 2. Get the answer of 4.53...
Step 3. Round down because it's the number of whole dresses
Step 4. Get the answer of 4.
Hope this helps! Btw, I don't need Brainliest if the other person wants it.
Answer:
They can make 4 dresses
Step-by-step explanation:
Since it is 3.6667 yards per dress, and the amount they have is 16 yards, divide the amount they have by number of yards per dress to get slightly over 4. Since you can't make a percent of a dress, the answer would be 4.
PLEASE HELP!!!
Triangle DEF is similar to triangle ABC. What is the sequence of transformations that maps triangle ABC to DEF?
Answers
The sequence that maps ΔABC to ΔDEF are represented by three transformations: a horizontal and vertical translation and a counterclockwise rotation.
What transformations have been done to a obtain a resulting triangle?
According to Euclidean geometry, a transformation is rigid if and only if Euclidean distances are conserved for every point of the figure. It is to be noticed that there is more than one manner to obtain the resulting figure.
After a careful inspection both on the statement and on the figure, we conclude that the following sequence of transformations:
Translation of 2 units in the -x direction.Translation of 2 units in the -y direction.Rotation around the point D of 0.5π counterclockwise.To learn more on rigid transformations, we kindly invite to check this verified question: https://brainly.com/question/1761538
When x^2 + bx + 2 is divided by
X + 3, the remainder is 5. find the value of b
Answers
Answer:
b = 2
Step-by-step explanation:
Let f(x) = x² + bx + 2,
[tex]f( - 3) = 5 \\ {( - 3)}^{2} - 3b + 2 = 5 \\ 11 - 3b = 5 \\ 3b = 6 \\ b = 2[/tex]
It has taken me 32 minutes to drive 48 km. If the total length of my journey is 146 km and I
maintain the same speed, estimate how much longer I will be driving for.
Answers
To find how long you can drive in a minute we do 48 divided by 32 = 1.5. So it takes 1 min to drive 1.5km
Then we 146 divided by 1.5 = 97 and a third to find out how long it takes to drive 146km.
Then we convert it to hours to get 1h and 57min.
Then we - 32 because we already drove 32min. 1h and 57min - 32 = 1h and 25min
A photograph has a length that is 6 inches longer than its width,x. So it's area is given by the expression x(x+6) square inches.
Answers
Answer:
The width of the photograph is 8 inches
Step-by-step explanation:
hopefully im right
What is the distance between the points(-4,-1) and (-6,8) in simplest radical form.
Answers
[tex]~~~~~~~~~~~~\textit{distance between 2 points} \\\\ (\stackrel{x_1}{-4}~,~\stackrel{y_1}{-1})\qquad (\stackrel{x_2}{-6}~,~\stackrel{y_2}{8})\qquad \qquad d = \sqrt{( x_2- x_1)^2 + ( y_2- y_1)^2} \\\\\\ d=\sqrt{[-6 - (-4)]^2 + [8 - (-1)]^2}\implies d=\sqrt{(-6+4)^2+(8+1)^2} \\\\\\ d=\sqrt{(-2)^2 + 9^2}\implies d=\sqrt{85}[/tex]
1/2 ÷ (-1/7) Answer in a mixed number
Answers
[tex]\sf{-3\displaystyle\frac{1}{2} }[/tex]
Solution:First, we need to flop the second fraction over.Then, we need to multiply the first fraction times the second fraction.In order to multiply fractions, we need to multiply the numerator of the first fraction times the numerator of the second fraction:[tex]\displaystyle\frac{1}{2} *-\frac{7}{1}[/tex][tex]-\displaystyle\frac{7}{2}[/tex]Now, let's convert the improper fraction into a mixed number.First, how many times does 2 go into 7? (evenly)The answer is 3.Now, multiply 3 times 2. We get 6.Subtract 7-6. We get 1.The denominator stays the same.Therefore, the answer is[tex]-3\displaystyle\frac{1}{2}[/tex]Hope it helps.
Do comment if you have any query.
Step-by-step explanation:
[tex] = \frac{1}{2} \div ( - \frac { 1}{7}) \\ [/tex]
Move the ( - ) sign forward
[tex] = - \frac{1}{2} \div \frac{1}{7} \\ [/tex]
[tex] = - \frac{1}{2} \times \frac{7}{1} \\ [/tex]
[tex] = - \frac{7}{2} \\ [/tex]
Heeeeeeeeeeelllllllllllllllllllllpppppppppppp
Answers
Answer:
Hope it helps you......
Mary reduced the size of a painting to a
width of 5.4 in. What is the new height if it
was originally 46.5 in height and 32.7 in width?
Round to nearest tenth of an inch.
Answers
By finding the scale factor as a quotient of the two given widths, we will see that the new height is 7.7 in
How to get the new height?
We assume that the height and the width are reduced by the same scale factor.
Such that the scale factor is given by the quotient between the new width and the original width, so we have:
k = 5.4in/32.7in = 0.1651
Then the new height will be the original height times the above number, which gives:
H = 0.1651*46.5 in = 7.7 in
We conclude that the new height of the painting is 7.7 inches.
If you want to learn more about scale factors, you can read:
https://brainly.com/question/3457976
2. Brian thinks that 1.75 x 10-3 is less than 1.25 10-2. Is he correct? Justify your answer.
Answers
Answer:
Yes
Step-by-step explanation:
please hurry
Rectangle A'B'C'D is a dilation of rectangle ABCD What is the scale factor? Enter your answer in the box.
Answers
The scale factor is 4
Five friends share 4 bags of trail mix equally.
What fraction of a bag of trail mix does each friend get?
Answers
Help me for 10 help me please
Answers
Answer:
Answer:
what do u need help in?
I will give Brainliest!!!
A savings account was opened and not touched for 4 years. The amount of money in the account grew by a consistent percentage at the end of each year. Complete the missing values in the table.
Answers
148.5
219.62
There is a 10% increase by year
A 10% DECREASE of 165 is 148.5
A 10% INCREASE of 199.65 is 219.62
The sum of, half of a number and double the number is 20. Find the number.
Answers
Answer:
The number is 8.
Step-by-step explanation:
Rewrite the word problem as an equation.
The sum of (we will be adding.), half of a number (we can use x, this will be written as x/2.) and double the number (this will be written as 2x) is 20.
To find the number, solve the equation.
x/2 + 2x = 20
Multiply both sides by 2.
x + 4x = 40
Combine terms.
5x = 40
Divide both sides.
x = 8.
Answer:
i think 8 is the answer
Step-by-step explanation:
i am sorry if i am worng
If you draw out a red marble, keep it, then draw out a
blue marble, is it independent or dependent probability?
Independent
Answers
Answer:
dependent
Step-by-step explanation:
the probability of drawing the blue marble was changed when you drew the red marble and did not put it back
last number of 1²+2²+...+2007²
Answers
Answer:
4028054 is the last number when we operate it....
Can someone help me I need this done ASAP like TODAY… I know D. I just dont know A, B, C. Please helppppppppp meeeeeeeeee
Answers
Answer:
Please see explanation
Step-by-step explanation:
base= -3
the exponent is 5
in expanded form -3×-3×-3×-3×-3
evaluation = -3×-3×-3×-3×-3= -243
∠2 and ∠4 are "blank" angles.
Answers
Answer:
angles 4 and 2 are congruent
Step-by-step explanation:
the same
what can you add to get negative 8 and multiple to get positive 7
Answers
Step-by-step explanation:
-1 and 8 Below we prove the -1 and 8 multiple to -8 and add up to this -1 × 8= -8
Triangle ABC is a right triangle, and mC is 78°.
What is mA?
A. 2°
B. 12°
C. 22°
D. 32°
Answers
Answer:
[B] 12°
Step-by-step explanation:
Given:
Triangle ABC is a right triangle, and m∠ C is 78°.
Solution:
Knowing that Triangle = 180 degree
Square in a right angle = 90° angle.
Thus,
78+90 =168
180-168 is 12
Hence, the answer is [B] 12 degree
Kavinsky
Answer:
the answer is
Step-by-step explanation:
B
HELP MEEEEE THIS IS DUE IN 2 HOURSSS
Answers
Complete the two-way frequency table below, which shows the
distribution of blood types for students in their first year at a local
college.
O AB AB Total
Male (M) 210 17474 42
Female (F)|31526111163
Total
What is P(ABM), and are the events "the student is male" and "the
student has blood type AB" independent events? (7 points)
а
21
; they are independent because P(M N AB) = P(M)
250
· P(AB)
Ob
T!
; they are dependent because P(M NAB) P(M) · P(AB)
5
Ос
21
; they are independent because P(M N AB) = P(M)
625
P(AB)
Od
1
--; they are dependent because P(M N AB) = P(M) · P(AB)
4
Answers
Answer:
a.
Step-by-step explanation:
Probability that is a AB type blood given is a Male
P(AB/M) = 42/500 = 21/250
Probability that they are Male with an AB type blood out of all AB type blood people = Probability that is a Male out of all students
P(M∩AB) = P(M)
(42/105) = (500/1,250)
.4 = .4 ✅
The events "the student is male" and "the student has blood type AB" are independent events.
Divide $3600 among Nancy Beverly and Todd in the ratio 2:3:4?
Answers
Answer:
nancy: $800, beverly: $1200, todd: $1600
Step-by-step explanation:
finding the portion of one part of the ratio:
3600 ÷ 9 = 400 (9 came from 2 + 3 + 4 in the ratio)
Nancy: 2 x 400 = $800
Beverly: 3 x 400 = $1200
Todd: 4 x 400 = $1600
checking the answer:
1600 + 1200 + 800 = 3600
4. Convert: 32 cups = gallons 10 gallons 3 gallons 2 gallons 1 gallon
Answers
Answer:
2 gallons
Step-by-step explanation:
:/
8th Grade Math!!
find the area of the rectangle.
the area of the rectangle is __ square feet. (simplify your answer)
Answers
Answer:
[tex]48x^{13}\ ft^2[/tex]
Step-by-step explanation:
Step 1: Determine the area of the rectangle
To find the area of the rectangle we just need to do Length * Width which will give us the area in square feet (it really depends on the units that they are giving the L and W in).
[tex](8x^6) * (6x^7)[/tex]
[tex]((8*6)(x^6*x^7))[/tex]
[tex](48*x^{6+7})[/tex]
[tex]48x^{13}[/tex]
Answer: [tex]48x^{13}\ ft^2[/tex]