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2 years ago

Is (8, 4) a solution to this system of equations? 20x + y = 10 8x + 16y = 19 Yes or no

Mathematics

1 answer:

Shtirlitz [24]2 years ago

4 0

Answer:

hell yes

Step-by-step explanation:

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Please help. Dont put a random answer plz.

Alenkasestr [34]

Answer:

Explination:

Work:

5 0

3 years ago

2. Dos calles tienen longitudes de 2 y de metros, ¿cuál es la longitud total de ambas?

Slav-nsk [51]

2que + 33x =56 no hablo galiebte

4 0

3 years ago

Given points A (1, 2/3), B (x, -4/5), and C (-1/2, 4) determine the value of x such that all three points are collinear

AlladinOne [14]

Answer:

$x=\frac{83}{50}$

Step-by-step explanation:

we know that

If the three points are collinear

then

$m_A_B=m_A_C$

we have

A (1, 2/3), B (x, -4/5), and C (-1/2, 4)

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

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

step 1

Find the slope AB

we have

$A(1,\frac{2}{3}),B(x,-\frac{4}{5})$

substitute in the formula

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

$m_A_B=\frac{\frac{-12-10}{15}}{x-1}$

$m_A_B=-\frac{22}{15(x-1)}$

step 2

Find the slope AC

we have

$A(1,\frac{2}{3}),C(-\frac{1}{2},4)$

substitute in the formula

$m_A_C=\frac{4-\frac{2}{3}}{-\frac{1}{2}-1}$

$m_A_C=\frac{\frac{10}{3}}{-\frac{3}{2}}$

$m_A_C=-\frac{20}{9}$

step 3

Equate the slopes

$m_A_B=m_A_C$

$-\frac{22}{15(x-1)}=-\frac{20}{9}$

solve for x

$15(x-1)20=22(9)$

$300x-300=198$

$300x=198+300$

$300x=498$

$x=\frac{498}{300}$

simplify

$x=\frac{83}{50}$

8 0

3 years ago

Which numbers should be multiplied to obtain 175^2 − 124^22?

agasfer [191]

This question seems to me to be an exercise in applying the rule for a difference of squares in order to rewrite the difference of two relatively large numbers as the "simpler" product of other integers.

$175^2-124^2=(175-124)(175+124)=51\cdot299=15,249$

3 0

3 years ago

5/8−(1/4)2= ________

bixtya [17]

Hey there!☺

$Answer:\boxed{\frac{1}{8}}$