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3 years ago

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Solve this using substitution y=4x-8 and y=2x+10

1 answer:

ASHA 777 [7]3 years ago

4 0

$\left\{\begin{array}{ccc}y=4x-8\\y=2x+10\end{array}\right\\\\4x-8=2x+10\\4x-2x=10+8\\2x=18\ \ \ /:2\\x=9\\\\y=4\cdot9-8=36-8=28\\\\Answer:x=9\ and\ y=28$

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Aleonysh [2.5K]

Answer:

Step-by-step explanation:

Null hypothesis: u = 9.5hrs

Alternative: u =/ 9.5hrs

Using the t test

t = x-u/sd/√n

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t = 10-9.5 / (1.6/√15)

t = 0.5 / (0.4131)

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3 years ago

Explain how to draw a circle with a circumference of 3.14^2 inches. then draw the circle.

ch4aika [34]

This is what I would do.

The general formula for the circumference of a circle is

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Now, draw a circle with a radius of 1.571 inches. This number has been rounded up to 3 significant figure. Hope this helps!

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4 years ago

One bag of Glizard wood chips covers a 154 square foot area. How many total bags of wood chips must be purchased to cover an are

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3 years ago

The assumption that YZ is perpendicular bisector of AX is not enough to show hat YXZ equals YAZ

d1i1m1o1n [39]

<span>The assumption that YZ is perpendicular bisector of AX is not enough to show hat YXZ equals YAZ is false</span>

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3 years ago

Read 2 more answers

Two quadrilaterals are similar. The length of the row longest sides of the first quadrilateral are 40in and 60in. The lengths of

Andreyy89

Answer:

The sides of the first quadrilateral are 60 in, 40 in, 30 in and 12,5 in

The sides of the second quadrilateral are 24 in, 16 in, 12 in and 5 in

Step-by-step explanation:

we know that

If two figures are similar, then the ratio of its corresponding sides is proportional, and this ratio is called the scale factor

Arrange the sides of each quadrilateral from largest to smallest

<u><em>First quadrilateral </em></u> <u><em>Second quadrilateral</em></u>

Longest side=60 in Longest side=c in

Second side=40 in Second side=16 in

Third side= a in Third side= 12 in

Fourth side=b in Fourth side=5 in

so

$\frac{60}{c}=\frac{40}{16}=\frac{a}{12}=\frac{b}{5}$

<em>Find the value of c</em>

$\frac{60}{c}=\frac{40}{16}$

$c=60(16)/40$

$c=24\ in$

<em>Find the value of a</em>

$\frac{40}{16}=\frac{a}{12}$

$a=40(12)/16$

$a=30\ in$

<em>Find the value of b</em>

$\frac{40}{16}=\frac{b}{5}$

$b=40(5)/16$

$b=12.5\ in$

7 0

3 years ago