All categories

3 years ago

42 = 7 ( x + 5 ) solve for x

Mathematics

2 answers:

PSYCHO15rus [73]3 years ago

7 0

Answer:

Step-by-step explanation:

1. distribute 7 to x and 5.

42 = 7x + 35

2. subtract 35 on both sides.

7 = 7x

3. Divide by 7 for both sides.

1 = x

Olegator [25]3 years ago

4 0

Answer:

x = 1

Step-by-step explanation:

You might be interested in

Someone please HELP!?

jeka94

A negative exponent just means that the base is on the wrong side of the fraction line, so you need to flip the base to the other side.

For example

$x^{-2}=\frac{1}{x^2}$

or

$( \frac{2}{5} )^{-4}=( \frac{5}{2} )^4$

***************************************
$(8r^{-5})^{-3}$

$(8* \frac{1}{r^5} )^{-3} \\\\( \frac{8}{r^5} )^{-3}
 \\ \\ ( \frac{r^5}{8} )^3
\\\\ \mathrm{Apply\:exponent\:rule}:\quad *\left(\frac{a}{b}\right)^c=\frac{a^c}{b^c} \ \ \ \ \ \ \ \ \ \ \ \ *(a^b)^c=a^{bc}
 \\\\( \frac{r^{15}}{8^3} )
\\\\( \frac{r^{15}}{512} )$

The answer is "D"

7 0

3 years ago

The fraction a/b must be equal to which expression

OlgaM077 [116]

Answer:

Step-by-step explanation:

3 0

3 years ago

<img src="https://tex.z-dn.net/?f=%20%5Csqrt%7B%20%5Cfrac%7B3%7D%7B16%7D%20%7D%20" id="TexFormula1" title=" \sqrt{ \frac{3}{16}

sweet-ann [11.9K]

Hello!
When you have a non-exact root (irrational number)

$\sqrt{ \frac{3}{16} } \to \frac{ \sqrt{3} }{ \sqrt{16} } \to \boxed{\boxed{\frac{ \sqrt{3} }{4} }}\Longleftarrow(irrational\:number)\end{array}}\qquad\quad\checkmark$

7 0

3 years ago

Judi solved the equation 1 – 18 = 43. Her work is shown.<br> What error did Judi make?

mihalych1998 [28]

Answer:

she needed to add instead of subtract to find x so x should be 61

Step-by-step explanation:

7 0

3 years ago

Read 2 more answers

Is 2 1/2 a whole number

Nat2105 [25]

Answer:

No.

Step-by-step explanation:

A whole number does not allow fractions.

4 0

3 years ago