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3 years ago

12

Solve System by Elimination method, provide steps. -x - 18y = -26 2x + 9y = -2

1 answer:

kkurt [141]3 years ago

4 0

This is it you’re welcome:)

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Solve the problem.

Goshia [24]

Imagine a 'U' shape
sides are x legnth
base is b legnth
2x+b=25

area is height times base=xb

xb=50
2x+b=25
solve
minus 2x both sides
b=25-2x
sub for b
x(25-2x)=50
25x-2x^2=50
times -1 both sides
2x^2-25x=-50
add 50 both sides
2x^2-25x+50=0
use quadratic formula or something
x=2.5 or 10

A is the answer

4 0

3 years ago

Read 2 more answers

Write 3 other fractions that are equivalent to the given fraction. Include simplest Ford of the fraction

noname [10]

11.

$\dfrac{16}{100} =\\1)=\dfrac{160}{1000} \\2)=\dfrac{32}{200} \\3)=\dfrac{4}{25}$

12.

$\dfrac{32}{48}=\\1) =\dfrac{4}{6} \\2)=\dfrac{64}{96} \\3)=\dfrac{2}{3}$

13.

$\dfrac{21}{48} =\\1)=\dfrac{7}{16} \\2)=\dfrac{42}{96} \\3) =\dfrac{210}{480}$

6 0

3 years ago

Linear Functions 3-2 additional Practice

Ainat [17]

Answer: You gotta do your own homework sometimes :(

Step-by-step explanation: Ask the questions separately

maybe you will get better answers.

7 0

3 years ago

3.7 x 0.25 please show me the steps on how to solve thank you

Sedaia [141]

Answer:

0.975

Step-by-step explanation:

3 0

3 years ago

In △ABC acute angles are in the ratio 5:1, i.e. ∠BAC:∠ABC = 5:1. If CH is an altitude and CL is an angle bisector, find m∠HCL.

tekilochka [14]

If $m\angle BAC:m\angle ABC=5:1,$ then $m\angla BAC=(5x)^{\circ},\ m\angle ABC=x^{\circ}.$

The sum of the measures of the interior angles of the triangle is always 180°, then

$m\angle ACB=180^{\circ}-x^{\circ}-(5x)^{\circ}=180^{\circ}-(6x)^{\circ}.$

Since CL is bisector, then

$m\angle BCL=m\angle ACL=\dfrac{180^{\circ}-(6x)^{\circ}}{2}=90^{\circ}-(3x)^{\circ}.$

Consider right triangle ACH. In this triangle

$m\angle ACH=180^{\circ}-90^{\circ}-(5x)^{\circ}=90^{\circ}-(5x)^{\circ}.$

Now angle HCL has measure

$m\angle HCL=m\angle ACL-m\angle ACH=90^{\circ}-(3x)^{\circ}-(90^{\circ}-(5x)^{\circ})=(2x)^{\circ}=2m\angle ABC.$

Answer: $m\angle HCL=2m\angle ABC.$

6 0

4 years ago