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GuDViN [60]
3 years ago
8

I need help step my step plz

Mathematics
1 answer:
Nikitich [7]3 years ago
8 0

8 = 4 + 4

8 * 3 = (4 + 4) * 3 = (4*3) + (4*3) = 12 + 12 = 24

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Please help me ASAP?!!
Blababa [14]

Answer:

(0,-5) and (-4,3)

Step-by-step explanation:

The given equations are

\left \{ {{x^2+y^2=25} \atop {2x+y=-5}} \right.

Make y the subject in the second equation;

y=-2x-5

Substitute into the first equation;

x^2+(-2x-5)^2=25

Expand:

x^2+4x^2+20x+25=25

x^2+4x^2+20x+25-25=0

5x^2+20x=0

5x(x+4)=0

\Rightarrow x=0,x=-4

When x=0,

y=-2(0)-5=-5

This gives; (0,-5)

When x=-4

y=-2(-4)-5=3

This gives (-4,3)

7 0
3 years ago
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(-4)(-4) use an exponent to rewrite the expression
DiKsa [7]
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 Therefore, an exponent to rewrite the expression is:
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5 0
3 years ago
Andrew owns stock in Hyren Airlines and as a result gets paid dividends worth $539.70 every year. If Andrew owns 105 shares of H
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The correct answer for the question that is being presented above is this one: "b. $2.78." Andrew owns stock in Hyren Airlines and as a result gets paid dividends worth $539.70 every year. If Andrew owns 105 shares of Hyren Airlines, the dividend of each share yields <span>b. $2.78</span>
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Which expression gives the x-coordinate of the solution of the system?
aalyn [17]
To find the the expression that gives the value of x we are going to proceed as follows: 
5x+3y=-18 equation (1)
2x-4y=-28 equation (1)

Step 1. solve for y in equation (2)
2x-4y=-28
-4y=-28-2x
y= \frac{-28-2x}{-4}
y=7+ \frac{1}{2} x equation (3)

Step 3. Replace equation (3) in equation (1) and solve for x
5x+3y=-18
5x+3(7+ \frac{1}{2} x)=-18
5x+21+ \frac{3}{2} x=-18
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7 0
3 years ago
9 What dimensions do we need a rectangular
wlad13 [49]

Answer:

W=30m L=90m

Step-by-step explanation:

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we know that area of a rectangle is A=L*W so we sustitute what we know

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solve the quadratic equation with quadratic formula or on the calculator on the graph and will get W= -90 and W=30. Reject the -90 value because we can not have negative measurements. Our solution is W=30

L=A/W=2,700/30=90

3 0
3 years ago
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