All categories

3 years ago

Someone please help me on this and pls give brief and direct steps for this 7x-15=55. Thanks!

Mathematics

1 answer:

Lubov Fominskaja [6]3 years ago

4 0

Step-by-step explanation:

7x - 15 =55

7x= 55 +15

7x =70

X=70/7

X=10

Hope this helps..

You might be interested in

Proving the Converse of the Parallelogram Side Theorem

Brrunno [24]

Answer:

do it yourself

Step-by-step explanation:

6 0

2 years ago

What comes after a million, billion and trillion?

Vinil7 [7]

Million, Billion, Trillion, and Quadrillion

7 0

3 years ago

Find the slope of a line that goes between points (2, 4) and (5, 7).

yawa3891 [41]

Answer:

Step-by-step explanation:

$\frac{7-4}{5-2}=\frac{3}{3}= 1$

4 0

3 years ago

Read 2 more answers

Need help with this.

sweet [91]

♥️♥️♥️♥️♥️♥️♥️♥️♥️♥️♥️♥️♥️♥️

Let t as y² + 5y .

${y}^{2} + 5y = t$

Rewrite the equation :

$t - \frac{36}{t} = 0 \\$

Multiply sides by t

$t \times (t - \frac{36}{t} ) = t \times 0 \\$

${t}^{2} - 36 = 0$

Add sides 36

${t}^{2} - 36 + 36 = 0 + 36$

${t}^{2} = 36$

$t = ± \: 6$

_________________________________

So :

${y}^{2} + 5y = 6$

Subtract sides 6

${y}^{2} + 5y - 6 = 6 - 6$

${y}^{2} + 5y - 6 = 0$

$(y + 6)(y - 1) = 0$

$y = - 6 \: \: or \: \: y = 1$

##############################

${y}^{2} +5y = - 6$

$No \: \: solution$

_________________________________

Thus (( y = 1 )) and (( y = - 6 )) are the roots of the equation .

♥️♥️♥️♥️♥️♥️♥️♥️♥️♥️♥️♥️♥️♥️

8 0

3 years ago

This table gives a few (x,y) pairs of a line in the coordinate plane

blagie [28]

Answer:

The x-intercept of the line is the point (12,0)

Step-by-step explanation:

step 1

Find the slope of the lime

Take the points

(22,36) and (32,72)

The formula to calculate the slope between two points is equal to

$m=\frac{y2-y1}{x2-x1}$

substitute the values

$m=\frac{72-36}{32-22}$

$m=\frac{36}{10}$

$m=3.6$

step 2

Find the equation of the line in point slope form

$y-y1=m(x-x1)$

we have

$m=3.6$

$point (22,36)$

substitute

$y-36=3.6(x-22)$

step 3

Find the x-intercept

we know that

The x-intercept of a line is the value of x when the value of y is equal to zero

For y=0

substitute in the equation and solve for x

$0-36=3.6(x-22)$

$0-36=3.6x-79.2$

$3.6x=79.2-36$

$3.6x=43.2$

$x=12$

therefore

The x-intercept of the line is the point (12,0)

7 0

3 years ago

Someone please help me on this and pls give brief and direct steps for this 7x-15=55. Thanks!​

Someone please help me on this and pls give brief and direct steps for this 7x-15=55. Thanks!