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zaharov [31]
3 years ago
12

Solve -7(-4x+9)=-315

Mathematics
2 answers:
lapo4ka [179]3 years ago
6 0

Answer:

-9

Step-by-step explanation:

Divide both sides by -7

-4x+9 = 45

Subtract 9 from both sides

-4x = 36

Divide both sides by -4

x = -9

zvonat [6]3 years ago
4 0

Step-by-step explanation:

the answer would be -9.

28x -63 = -315

add 63 to -63 and -315

there u get this

28x= -252

then divide 28 both sides

x=-9

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8 0
3 years ago
Use rhombus TQRS below for questions<br> what is the value of x?<br> what is the value of y?
sladkih [1.3K]

The value of x is 1.

The value of y is 4.

Solution:

Given TQRS is a rhombus.

<u>Property of rhombus: </u>

Diagonals bisect each other.

In diagonal TR

⇒ 3x + 2 = y + 1  

⇒ 3x – y = –1 – – – – (1)

In diagonal QS

⇒ x + 3 = y

⇒ x – y = –3 – – – – (2)

Solve (1) and (2) by subtracting

⇒ 3x – y – (x – y) = –1 – (–3)

⇒ 3x – y – x + y = –1 + 3

⇒ 2x = 2

⇒ x = 1

Substitute x = 1 in equation (2), we get

⇒ 1 – y = –3

⇒ –y = –3 – 1

⇒ –y = –4

⇒ y = 4

The value of x is 1.

The value of y is 4.

6 0
4 years ago
Ricardo bought 3 pounds of red grapes, 4 pounds of green grapes, and 1 pound of black grapes. What is the ratio of green grapes
ivann1987 [24]

Answer:

4:3

Step-by-step explanation:

6 0
3 years ago
Lynn and Dawn tossed a coin 60 times and got heads 33 times. What is the experimental probability of tossing heads using Lynn an
Thepotemich [5.8K]
<h3>Answer: 11/20</h3>

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7 0
4 years ago
Im so confused right now. how do I do this?
Sedbober [7]

Step-by-step explanation:

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  2. you only need to know one side to figure out the
  3. volume of a cube
  4. volume is in 3Dimensions
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  6. which side you call length, width, or height doesn't matter

that's how you find the answer.

does that help?

6 0
3 years ago
Read 2 more answers
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