Ask question

Ask question

All categories

3 years ago

9

3x-15=17-x. Check your solution

2 answers:

Olenka [21]3 years ago

8 0

Answer:

x=8

Step-by-step explanation:

3x-15=17-x move variable to the left and change its sign

3x+x-15=17 collect like terms

4x=17 + 15 (3x=x=4x)

4x= 32 divide both sides by 4

x=8 (dividing 4x by 4 cancels the 4,s out and leaves x)

Sladkaya [172]3 years ago

3 0

Answer:

x=1

Step-by-step explanation:

3x-15=17-x

3x-x=17-15

2x=2

x=1

You might be interested in

What is 7 times the sum of a squared and b minus 4 times the sum of a squared and b

spayn [35]

<span><span>The sum of a squared and b is given by
$a^2+b$

</span>7 times the sum of a squared and b is given by
</span><span> $7(a^2+b)$
while 4 times the sum of a squared and b is given by
</span> $4(a^2+b)$

Therefore, <span>7 times the sum of a squared and b minus 4 times the sum of a squared and b is given by

$7(a^2+b)-4(a^2+b)=3(a^2+b)$ </span>

7 0

2 years ago

Use the rules of exponents to simplify the expressions. Match the expression with its equivalent value.

Lelechka [254]

Answer:

1) $\frac{(-2)^{-5}}{(-2)^{-10}}=-32$

2) $2^{-1}.2^{-4} = \frac{1}{32}$

3) $(-\frac{1}{2} )^3.(-\frac{1}{2} )^2=-\frac{1}{32}$

4) $\frac{2}{2^{-4}} = 32$

Step-by-step explanation:

1) $\frac{(-2)^{-5}}{(-2)^{-10}}$

Solving using exponent rule: $a^{-m}=\frac{1}{a^m}$

$\frac{(-2)^{-5}}{(-2)^{-10}}\\=(-2)^{-5+10}\\=(-2)^{5}\\=-32$

So, $\frac{(-2)^{-5}}{(-2)^{-10}}=-32$

2) $2^{-1}.2^{-4}$

Using the exponent rule: $a^m.a^n=a^{m+n}$

We have:

$2^{-1}.2^{-4}\\=2^{-1-4}\\=2^{-5}$

We also know that: $a^{-m}=\frac{1}{a^m}$

Using this rule:

$2^{-5}\\=\frac{1}{2^5}\\=\frac{1}{32}$

So, $2^{-1}.2^{-4} = \frac{1}{32}$

3) $(-\frac{1}{2} )^3.(-\frac{1}{2} )^2$

Solving:

$(-\frac{1}{2} )^3.(-\frac{1}{2} )^2\\=(-\frac{1}{8} ).(\frac{1}{4} )\\=-\frac{1}{32}$

So, $(-\frac{1}{2} )^3.(-\frac{1}{2} )^2=-\frac{1}{32}$

4) $\frac{2}{2^{-4}}$

We know that: $a^{-m}=\frac{1}{a^m}$

$\frac{2}{2^{-4}}\\=2\times 2^4\\=2(16)\\=32$

So, $\frac{2}{2^{-4}} = 32$

3 0

2 years ago

What is the cosine of angle a?<br> a. 8/17<br> b. 15/8<br> c. 15/17<br> d. 8/15

jolli1 [7]

Check the picture below.

6 0

2 years ago

What is the value of x,if x=3²

KatRina [158]

Answer:

x=9

Step-by-step explanation:

x = 3^2

x = 3*3

x=9

7 0

2 years ago

Read 2 more answers

How do you round 38.25

solniwko [45]

Because its under 6 you must round it down to 38.20 if it was 38.68 for example it would be 38.70

4 0

3 years ago

Read 2 more answers