Please help! Due today

Mathematics

1 answer:

vladimir2022 [97]3 years ago

5 0

Answer:

-4 5/12

Step-by-step explanation:

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Solve: 2x2-x = 21 {-7/2,3} {-3, 7/2}

Sergio039 [100]

Answer:

The answer is (-3,7/2)

Step-by-step explanation:

$2 {x}^{2} - x - 21 = 0 \\ (2x - 7)(x + 3) = 0 \\ 2x - 7 = 0 \: \: \: or \: \: x + 3 = 0 \\ x = \frac{7}{2} \: \: and \: x = - 3$

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3 years ago

Describe the solution to the system of equations below.<br> HALP

guajiro [1.7K]

Solve for
y
y in
5
x
−
y
=
8
5x−y=8.
y
=
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x
−
8
y=5x−8

2 Substitute
y
=
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x
−
8
y=5x−8 into
2
0
x
−
4
y
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4
20x−4y=24.
3
2
=
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32=24

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2
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32=24 is not true, this is an inconsistent system.

6 0

3 years ago

Johnathon can jog 3 2/5 miles in 7/8 hour. Find his average speed in miles per hour

Alex777 [14]

<span>We have to calculate the average speed if we know the distance and time that Johnatan can jog. The distanece: d = 3 2/5 miles = 3.4 miles. t = 7/8 hour = 0.875 h. Then we will use the formula for the average speed ( velocity ): v = d / t. v = 3.4 m / 0.875 h = 3.866 mph. Answer: The average speed is 3.866 mph.</span>

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3 years ago

Can someone help please

nordsb [41]

First you have to find the last side of it.
P= 182

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3 years ago

Please help

Drupady [299]

Answer:

56°

Step-by-step explanation:

2x+3x+5=90

5x=90-5

5x=85

x=85÷5

x=17

m<2=3x+5=3(17)+5=51+5=56

3 0

4 years ago