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3 years ago

Halp xD I took away the ones that I did

Mathematics

1 answer:

FinnZ [79.3K]3 years ago

3 0

4. is 46
8. is 438 dimes
9. is 3.099, 3.289, 3.644, 3.9
10. is .4868

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Give all solutions if the nonlinear system of equations, including those with no real complex components.

konstantin123 [22]

$\left\{\begin{array}{ccc}y=x^2+6x\\4x-y=-24\end{array}\right\\\\substitute:\\\\4x-(x^2+6x)=-24\\\\4x-x^2-6x+24=0\\\\-x^2-2x+24=0\\\\a=-1;\ b=-2;\ c=24\\\\\Delta=b^2-4ac$

$\Delta=(-2)^2-4\cdot(-1)\cdot24=4+96=100\\\\x_1=\frac{-b-\sqrt\Delta}{2a};\ x_2=\frac{-b+\sqrt\Delta}{2a}\\\\\sqrt\Delta=\sqrt{100}=10\\\\x_1=\frac{2-10}{2\cdot(-1)}=\frac{-8}{-2}=4;\ x_2=\frac{2+10}{2\cdot(-1)}=\frac{12}{-2}=-6\\\\y_1=4^2+6\cdot4=16+24=40;\ y_2=(-6)^2+6\cdot(-6)=36-36=0\\\\Answer:\\x=4\ and\ y=40\ or\ x=-6\ and\ y=0$

4 0

3 years ago

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Need help ASAP please

goblinko [34]

X equals 7.1 if you round to the nearest tenth

5 0

2 years ago

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7b + 15 +4 it says write two equivalent expressions.Help

VARVARA [1.3K]

Answer:

1. 4b+3b+15+4

2. 7b+19

Step-by-step explanation:

Both are equivalent expressions :))

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2 years ago

What is 4901 and 75 estimated to

yarga [219]

Answer:

5000 and 100

Step-by-step explanation:

5 0

3 years ago

There are a total of 84 students in the robotics club and the science club. The science club has 12 more students than the robot

Dafna11 [192]

Answer:

48 students in science

Step-by-step explanation:

Let r = students in robots club

s = students in science club

r+s = 84

s = r+12

Substitute the second equation into the first

r+(r+12) = 84

Combine like terms

2r+12 = 84

Subtract 12 from each side

2r = 84-12

2r = 72

Divide by 2

r = 72/2 = 36

We need to find s

s = r+12

s = 36+12

s = 48

There are 48 students in the science club

4 0

2 years ago

Read 2 more answers