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kkurt [141]
3 years ago
13

Can y’all help me with all of these

Mathematics
2 answers:
USPshnik [31]3 years ago
5 0
1- it’s

2- it’s

3- let’s

4- one’s

5- he’s
morpeh [17]3 years ago
5 0
1 It’s
2 It’s
3 Let’s
4 Ones
5 He’s
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Lisa sold her old bike for $140 less than she paid for it. She sold the bike for $85. Write and solve and equation to find how m
rodikova [14]

Answer:

Equation=$140+$85=$225

Step-by-step explanation:

If she sold her bike for $140 less than she paid for it, and she sold it for $85, you add 140 to 85 to get out much she paid for. To check your answer do 225-140=85.

4 0
3 years ago
Please help!!!! ASAP HURRY
velikii [3]
Your answer is the matrix with the top row of -8  20   0  and bottom row of 
4   32   -4
5 0
3 years ago
PLZ PLZ PLZ PLZ PLZ PLZ PLZ PLZ PLZ PLZ PLZ HELP ME
Mars2501 [29]

Answer:

A.) 40.506 cm is the answer

7 0
3 years ago
Read 2 more answers
What is the sum of 20x^2-10x-30
ivann1987 [24]

Answer:

The sum of the roots is 0.5

Step-by-step explanation:

<u><em>The correct question is</em></u>

What is the sum of the roots of 20x^2-10x-30

we know that

In a quadratic equation of the form

ax^{2} +bx+c=0

The sum of the roots is equal to

-\frac{b} {a}

in this problem we have

20x^{2} -10x-30=0  

so

a=20\\b=-10\\c=-30

substitute

-\frac{(-10)} {20}=0.5

<u><em>Verify</em></u>

Find the roots of the quadratic equation

The formula to solve a quadratic equation is equal to

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

a=20\\b=-10\\c=-30

substitute

x=\frac{-(-10)\pm\sqrt{-10^{2}-4(20)(-30)}} {2(20)}

x=\frac{10\pm\sqrt{2,500}} {40}

x=\frac{10\pm50} {40}

x=\frac{10+50} {40}=1.5

x=\frac{10-50} {40}=-1

The roots are x=-1 and x=1.5

The sum of the roots are

-1+1.5=0.5 ----> is ok

5 0
3 years ago
During the financial crisis of 2008, the price of a barrel of Brent crude oil fell from a high of $140 per barrel to around $50
andriy [413]

Answer: 35.7%

Step-by-step explanation:

140$ / 100% = 1.4$ per 1%

Next 50$ / 1.4% = 35.71

Round 35.71 to closest tenth so it would be 35.7

3 0
3 years ago
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