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serg [7]
3 years ago
12

Solve the system of equations.- 9x + 4y = 69x + 5y = -33​

Mathematics
1 answer:
liubo4ka [24]3 years ago
7 0

Let us solve this system of equations by using the elimination method. Adding the 2 equations, we get

9x + 5y - 9x + 4y = -33 + 6

9y = -27

y = -3

Substituting this value of y in the first equation, we get

-9x + 4(-3) = 6

-9x - 12 = 6

9x + 12 = -6

9x = -18

x = -2

Therefore, x = -2, and y = -3. Hope this helps! If you have any questions, feel free to ask.

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A total of h males and (h - 2) females visit the museum on a certain day. If total of visitors for that day is 80, what is the v
Akimi4 [234]

Given:

Number of males = h

Number of females = (h-2)

Total number of visitors = 80

To find:

The value of h.

Solution:

We have,

Number of males = h

Number of females = (h-2)

So, the total number of visitors is:

Total=h+(h-2)

Total=2h-2

It is given that the total number of visitors is 80. So,

2h-2=80

2h=80+2

2h=82

Divide both sides by 2.

h=\dfrac{82}{2}

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Therefore, the correct option is D.

3 0
3 years ago
Joseph is pouring concrete for his new patio. The area of the patio is 25.2 square feet
lidiya [134]

Answer:

3.5ft

Step-by-step explanation:

A = L(W)

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5 0
2 years ago
Temperature in degrees Fahrenheit can be converted into degrees Celsius using the formula C=5(F-32)/9
aksik [14]

Answer:

F= (9C+160)/5

Step-by-step explanation:

C=5(F-32)/9

make F the subject of the formula= isolate F

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5F=9C+160

F= (9C+160)/5

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8 0
2 years ago
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arlik [135]

Answer:

(6, 5) is the answer.

Step-by-step explanation:

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3 years ago
Which properties are best used prove a quadrilateral is a rhombus?
8_murik_8 [283]

Answer:

1) Show that the shape is a parallelogram with equal length sides

2) Show that the shape's diagonals are each others' perpendicular bisectors

3) Show that the shape's diagonals bisect both pairs of opposite angles.

Step-by-step explanation:

3 0
3 years ago
Read 2 more answers
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