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3 years ago

Factor: 14ax + 35ay - 28az please I need help afap❗❗❗❗❗

Mathematics

1 answer:

Greeley [361]3 years ago

7 0

Step-by-step explanation:

7a (2x + 5y - 4z)

it can't be broken down any lower.

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A sports store sells a 4 pack of tennis balls for $11.49, a 6 pack of tennis balls for $16.70, and a 9 pack for $22.99. Which pa

garik1379 [7]

Answer:

9 pack

Step-by-step explanation:

11.49/4=$2.87 per ball

16.70/6=$2.78 per ball

22.99/9=$2.55 per ball

4 0

3 years ago

Read 2 more answers

To ensure that the mass of an average grain of rock salt stays the same, what should you multiply the first factor 1.2 by so tha

mafiozo [28]

Answer:

Step-by-step explanation:

$1.2 X 100=120.\\$

6 0

3 years ago

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Can you prove it??<br>it's hard,I tried but couldn't solve this.

BARSIC [14]

I'll abbreviate $s=\sin\theta$ and $c=\cos\theta$ , so the identity to prove is

$\dfrac{s+c+1}{s+c-1}-\dfrac{1+s-c}{1-s+c}=2\left(1+\dfrac1s\right)$

On the left side, we can simplify a bit:

$\dfrac{s+c+1}{s+c-1}=\dfrac{s+c-1+2}{s+c-1}=1+\dfrac2{s+c-1}$

$\dfrac{1+s-c}{1-s+c}=-\dfrac{-2+1-s+c}{1-s+c}=-1+\dfrac2{1-s+c}$

Then

$\dfrac{s+c+1}{s+c-1}-\dfrac{1+s-c}{1-s+c}=2\left(1+\dfrac1{s+c-1}-\dfrac1{1-s+c}\right)$

So the establish the original equality, we need to show that

$\dfrac1{s+c-1}-\dfrac1{1-s+c}=\dfrac1s$

Combine the fractions:

$\dfrac{(1-s+c)-(s+c-1)}{(s+c-1)(1-s+c)}=\dfrac{2-2s}{c^2-s^2+2s-1}$

We can rewrite the denominator as

$c^2-s^2+2s-1=c^2+s^2-2s^2+2s-1$

then using the fact that $c^2+s^2=\cos^2\theta+\sin^2\theta=1$ , we get

$1-2s^2+2s-1=2s-2s^2$

so that we have

$\dfrac1{s+c-1}-\dfrac1{1-s+c}=\dfrac{2-2s}{2s-2s^2}=\dfrac1s$

as desired.

6 0

4 years ago

A 17- foot ladder is placed against a vertical wall of a building with the bottom of the ladder standing on level ground 11 feet

Hunter-Best [27]

Answer:

y= $\sqrt{168}$ or about 12.96 ft

Step-by-step explanation:

11^2+y^2=17^2

y^2=168

y= $\sqrt{168}$ or about 12.96 ft

7 0

2 years ago

Value of 180 when b = 4

lys-0071 [83]

Answer:

the answer is 45

Step-by-step explanation:

(180/4)=45

7 0

3 years ago

Factor: 14ax + 35ay - 28az please I need help afap❗❗❗❗❗​

Factor: 14ax + 35ay - 28az please I need help afap❗❗❗❗❗