All categories

3 years ago

(WILL GIVE BRAINLIEST IF CORRECT)

Mathematics

2 answers:

Alex3 years ago

6 0

Answer:

C. 40

Step-by-step explanation:

20 + 4x = 180

subtract 20 from both sides

4x = 160

Divide both sides by

x = 40

Doss [256]3 years ago

6 0

X = 180 -20/4
= 160/4
=x = 40

You might be interested in

(9 + 3) x 8 = 19 x 8) + (3 *__)

Taya2010 [7]

Answer:

x = 8

Step-by-step explanation:

(9 + 3) x 8 = (9 x 8) + (3 x x)

(9 + 3) x 8 = (9 x 8) + (3 x 8) = True

8 0

2 years ago

Read 2 more answers

5х – 2 = 3х + 4 sove equation for x

Kazeer [188]

Answer:

x=3

Step-by-step explanation:

5х - 2 = 3х + 4

5х - 3х = 4 + 2

2х = 6

х = 6/2

х = 3

Hope this helps!

8 0

3 years ago

Read 2 more answers

Need help with this question

posledela

Answer:

QR = 82.38 to nearest hundredth.

Step-by-step explanation:

As they are similar corresponding sides are in the same ratio.

So MN / QR = LM / QR

13/51 = 21/ QR

`3QR = 51*21

QR = 51*21/13

QR = 82.38

4 0

3 years ago

Simplify the problem.

lesya [120]

Answer:

Option 4: 4¹¹

Step-by-step explanation:

Looking at the problem, I need to work out 4⁴ squared first, which is the same as 4⁸. Then multiply that by 4³ to get 4¹¹. What I did was simply add 3 + (4 * 2), which is 11.

7 0

3 years ago

Solve x2 - 8x - 9 = 0. Rewrite the equation so that it is of the form x2 + bx = c.

barxatty [35]

Answer:

x=9,-1 and $x^2+(-8)x=9$

Explanation:

we have been given with the quadratic equation $x^2-8x-9$

we compare the given quadratic equation with general quadratic equation

general quadratic is $ax^2+bx+c=0$

from given quadratic equation a=1,b= -8,c= -9

substituting these values in the formula for discriminant $D=b^{2}-4ac$

$D=(-8)^2-4(1)(-9)=100$

Now, to find the value of x

Formula is $x=\frac{-b\pm\sqrt{D}}{2a}$

Now, substituting the values we will get

$x=\frac{-(-8)\pm\sqrt{100}} {2}= \frac{8\pm10}{2}=9,-1$

And rewritting the given equation by shifting 9 to right hand side of the given equation and taking minus inside the bracket so as to convert it in the form of

$x^2+bx=c$

4 0

3 years ago

Read 2 more answers

(WILL GIVE BRAINLIEST IF CORRECT)​

(WILL GIVE BRAINLIEST IF CORRECT)