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Irina18 [472]
3 years ago
13

Solve the equation. -7= z/3

Mathematics
2 answers:
Mariana [72]3 years ago
7 0

Step-by-step explanation:

- 7 =  \frac{z}{3}  \\ by \: cross \: multiplication \\  z =  - 7 \times 3 \\ z =  - 21

Hunter-Best [27]3 years ago
6 0
-7=z/3
-7x3=z
-21 = z
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Step-by-step explanation:

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Given that the triangles are similar, find the value of x. Find the length of NR.
lorasvet [3.4K]

Given:

Figure of similar triangles.

To find:

The value of x and the measure of NR.

Solution:

In triangle RST and RMN,

\angle SRT\cong \angle MRN              (Vertically opposite angles)

\angle RST\cong \angle RMN              (Alternate interior angles)

\Delta RST\sim \Delta RMN                 (By AA property of similarity)

We know that, corresponding sides of similar triangles are proportional.

\dfrac{RS}{RM}=\dfrac{RT}{RN}

\dfrac{40}{8}=\dfrac{60}{2x-2}

5=\dfrac{60}{2x-2}

2x-2=\dfrac{60}{5}

On further simplification, we get

2x=12+2

x=\dfrac{14}{2}

x=7

The value of x is 7.

Now,

NR=2x-2

NR=2(7)-2

NR=14-2

NR=12

Therefore, the value of x is 7 and the measure of NR is 12 units.

8 0
3 years ago
What are the values of a, b, and c in the quadratic equation -2x^2+4x-3=0
Serga [27]

Answer:

a=-2\\b=4\\c=-3

Step-by-step explanation:

We know that a standard form of equation in quadratic is

ax^2+bx+c=0

We are given an equation as

-2x^2+4x-3=0

To find a,b and c, it is sufficient to compare the given equation with std form

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equate the coefficients of corresponding terms.

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3 years ago
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its called a mixed number

8 0
3 years ago
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crimeas [40]

Answer:

34.4°C (rounded up to nearest tenth)

Step-by-step explanation:

Given; F = \frac{9}{5}C + 32

94°F = \frac{9}{5}C + 32

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C = \frac{62 * 5}{9} = 34.44444444°C

And is equal to: 34.4°C (rounded up to nearest tenth)

6 0
3 years ago
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