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DIA [1.3K]
3 years ago
11

What value of r makes the following equation true​

Mathematics
2 answers:
Montano1993 [528]3 years ago
8 0

Answer:

2.

Step-by-step explanation:

8 = -3(2) + 7(2)

8 = (-6) + (14)

8 = 8

NNADVOKAT [17]3 years ago
4 0

Answer:

8 =  - 3r + 7r \\ 8 = 4r \\ r =  \frac{8}{4}  = 2 \\ r = 2 \\ thank \: you

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Solve 9/10=z/8 . Round to the nearest tenth.
kompoz [17]
\boxed {Question}
\frac{9}{10} =  \frac{z}{8}

\boxed {Cross \  multiply}
10z = 8 \times 9

\boxed {Evaluate}
10z = 72
z = 72 \div 10
z = 7.2

\Longrightarrow \bf \ Answer \ : \ z = 7.2

4 0
3 years ago
3.5 cm = to what ml
zaharov [31]
3.5 cubic centimeters is also equivalent to 3.5 ml
6 0
3 years ago
PLEASE HELP this is due soon, I will mark brainliest if I can.
I am Lyosha [343]

Answer:

  • 102 cm

Step-by-step explanation:

  • Diagonals of a rhombus are perpendicular.
  • Sides are of equal length.

<u>Use Pythagorean to work out the side length.</u>

  • a² = (d₁/2)² + (d₂/2)²
  • a² = (24/2)² + (45/2)² = 650.25
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<u>The perimeter is:</u>

  • P = 4a
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6 0
2 years ago
Read 2 more answers
5x - (8x -17) = -10
mihalych1998 [28]

Answer:

x=9

Step-by-step explanation:

isolate the variable by dividing each side by factors that dont contain the variables.

can i get the crown?

5 0
3 years ago
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If you are asked to provide a set of two or more numeric answers, separate them with commas. For example, to provide the year th
garik1379 [7]

Answer:  Perimeter = 66 cm and area =66\ m^2

Step-by-step explanation:

The perimeter of rectangle is given by :-

P=2(l+w), where l is length and w is width of the rectangle.

Given : A rectangle has a length of 5.50 m and a width of 12.0 m .

Then, the perimeter of rectangle :

P=2(12+5.50)\\\\\Rightarrow\ P=2(17.50)=35\ m

Also, area of rectangle is given by :-

A=l\times w=5.50\times12=66 \ m^2

Area of rectangle = 66\ m^2

3 0
3 years ago
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