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3 years ago

The expression -6x-7(4+3x)is equivalent to

Mathematics

1 answer:

ANEK [815]3 years ago

7 0

Do you have choices?

The most simplified expression that is equal is
-27x-28

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9(n+3)=7n-3 Help Me Find "X"

Y_Kistochka [10]

9(n+3)=7n-3

1) distribute 9 into (n+3)

9n+27=7n-3

2) subtract 7n on both sides

2n+27=-3

3) subtract 27 on both sides

2n=-30

4) divide by 2

n=-15

8 0

3 years ago

Read 2 more answers

Kelly wants to buy cupcakes for her family. The radius of the cupcake is 12

Masja [62]

Answer:

75.4 inches

Step-by-step explanation:

circumference = 2πr = 24π ≅ 75.4 inches

It's really more of a tubcake than a cupcake.

5 0

3 years ago

2 1/4 x 3 2/5<br> show all your work

monitta

Answer:

153/20

Step-by-step explanation:

I assume you're asking

$2 \frac{1}{4} \times 3 \frac{2}{5}$

$\frac{9}{4} \times \frac{17}{5}$

$\frac{153}{20}$

5 0

3 years ago

Cassie has 10 cousins. There is only 1 Jackson cousin, but there are twice as many Lopez cousins as Chen cousins. How many Lopez

user100 [1]

Jackson = 1
+
Lopez = 6
+
Chen = 3
=
10 cousins

3 0

3 years ago

B. 8/27 D. 1/3 10. Three spheres of radii , 2r, and 3r, respectively, are melted and formed into a new sphere. Find the surface

Dahasolnce [82]

Answer:

$A_{f}=4\pi (\sqrt[3]{36} r)^{2}\\\\V_{f}=\frac{4}{3} \pi (36r^{3})$

Step-by-step explanation:

In order to find the final radii of the sphere, we need to calculate the volume, knowing that volumes are additive:

$V_{1}=\frac{4}{3} \pi (r^{3})\\\\V_{2}=\frac{4}{3} \pi (2r)^{3}\\\\V_{3}=\frac{4}{3} \pi (3r)^{3}\\\\V_{f}=\frac{4}{3} \pi (r^{3}+(2r)^{3}+(3r)^{3})\\\\V_{f}=\frac{4}{3} \pi (r^{3}+8r^{3}+27r^{3})\\\\V_{f}=\frac{4}{3} \pi (36r^{3})\\\\V_{f}=\frac{4}{3} \pi R^{3}\\\\R=\sqrt[3]{36} r$

Now that we know the radii of the new sphere, we can calculate the surface area:

$A_{f}=4\pi R^{2}\\\\A_{f}=4\pi (\sqrt[3]{36} r)^{2}$

8 0

3 years ago