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3 years ago

Write an equivalent expression: 8(3m – 4)

Mathematics

1 answer:

julsineya [31]3 years ago

5 0

Answer:

24m -32

Step-by-step explanation:

8(3m-4)

8(3m)-8(4)

8(3m)=24m

24m-8(4)

8(4)=32

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10. In ABC, if A and B are acute angles, and sin A= 10/13<br> what is the value of cos A ?

Margarita [4]

Answer:

In triangle AB, A and B are acute angles so. AC and BC are right angles.

Sin A = 10/13

13 is the hypotenuse side and 10 is the opposite side.

To find cos A.

From pythagorean theorem:

Step-by-step explanation:

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4 years ago

Last summer, the Smith family drove through seven different states and visited various popular landmarks. The prices of gasoline

lapo4ka [179]

3.40-2.26=1.14
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3 years ago

Find the solutions to the equation 102x 11 = (x 6)2 – 2. Which values are approximate solutions to the equation? Select two answ

otez555 [7]

You can try finding the roots of the given quadratic equation to get to the solution of the equation.

There are two solutions to the given quadratic equation

$x = 0.202, x = 113.798$

<h3>How to find the roots of a quadratic equation?</h3>

Suppose that the given quadratic equation is $ax^2 + bx +c = 0$

Then its roots are given as:

$x = \dfrac{-b \pm \sqrt{b^2 - 4ac}}{2a}$

<h3>How to find the solution to the given equation?</h3>

First we will convert it in the aforesaid standard form.

$102x + 11 = (x-6)^2 - 2\\102x + 11 + 2 = x^2 + 36 - 12x\\0 = x^2 -114x + 23\\x^2 -114x + 23 = 0\\$

Thus, we have

a = 1. b = -114, c = 23

Using the formula for getting the roots of a quadratic equation,

$x = \dfrac{-b \pm \sqrt{b^2 - 4ac}}{2a}\\\\x = \dfrac{114 \pm \sqrt{114^2 - 92}}{2} \\\\ x = 0.202 (\text{used "-" sign})\\\\x = 113.798 ( used "+" sign})$

Thus, there are two solutions to the given quadratic equation

$x = 0.202, x = 113.798$

Learn more here about quadratic equations here:

brainly.com/question/3358603

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3 years ago

Work out the area of a rectangle with base, b = 20mm and perimeter, P = 60mm.

skelet666 [1.2K]

base+perimeter

20mm+60mm

=80mm

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3 years ago

A bakery offers a sale price of $3.25 for 4 muffins. What is the price per dozen?

s2008m [1.1K]

Answer:

$9.75

Step-by-step explanation:

To get from 4 to a dozen, you have to multiply by 3.

3.25 x 3 = 9.75

7 0

3 years ago

Read 2 more answers