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pychu [463]
3 years ago
10

Equivalent expression for 7a+21

Mathematics
1 answer:
Mila [183]3 years ago
6 0

Answer:

Step-by-step explanation:

If you factor the expression 7a+21 you can get:

7 × (a+3)

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Casey is taking pictures outdoors. She knows that the darker it is outside, the stronger she needs to set her flash
alexgriva [62]
Casey should know that the flash is the little lightning button on her phone.......or read the manual if she is using a camera.
7 0
3 years ago
find the missing value so the line passing through the points has the given slope.(10,y) and (3,4);m=3/4
Hoochie [10]

Answer:

The value of y is 9¼.

Explanation:

Given that the slope of the set of points (10,y) and (3,4) is 3/4.

Using the slope formula:

\text{Slope},m=\frac{Change\text{ in y-axis}}{Change\text{ in x-axis}}

We have:

\frac{3}{4}=\frac{4-y}{3-10}

We then solve for y:

\begin{gathered} \frac{3}{4}=\frac{4-y}{-7} \\ \text{Cross multiply:} \\ 4(4-y)=-21 \\ 16-4y=-21 \\ -4y=-21-16 \\ -4y=-37 \\ y=\frac{-37}{-4} \\ y=9\frac{1}{4} \end{gathered}

The value of y is 9¼.

3 0
1 year ago
Kaeleb made an apple pie in the shape of a triangle. The side lengths of his pie are 9 centimeters. He wants to reduce each side
White raven [17]

Answer:

hi

Step-by-step explanation:

4 0
3 years ago
Cassle ran 2.2 miles on Monday, 2 3/5 miles on Tuesday, 14 miles on Wednesday, and 3 7/10 miles on Thursday. How many miles did
RoseWind [281]

Answer:

c

Step-by-step explanation:

5 0
3 years ago
PLS HELP ME GUYS ASAP FOR 4, 5, 6, and 7 (SHOW WORK!!!) + LOTS OF POINTS!
oksano4ka [1.4K]
4)

12/16=21/b

multiply both sides by b
(12/16)b=21

now multiple both sides by (16/12)
b = 21 (16/12) =28

5)
rate is distance / time or time/distance

train travels 279 km per 1.5 hr =270/1.5
or
1.5 hr per 270 =1.5/27p

answer choice a and c matches that.
looking at choice C...270km/1.5hr=5hr/270km

looking at choice A.. 1.5hr/270km=5hr/k km

the units don't match for choice C so the

right answer is A

6)

1.5/270=5/k

multiply both sides by k
(1.5/270)k=21

now multiple both sides by (270/1.5)
k = (270/1.5)21= 900

7) 75 points per 6 game

75 points / 6 games

75/6=P/20

multiply both sides by 20
(75/6)20=P

P=250
8 0
3 years ago
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