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inessss [21]
2 years ago
15

Solving equations -3x+7=28?

Mathematics
2 answers:
scoundrel [369]2 years ago
7 0

Answer:

X= -7

Step-by-step explanation:

AURORKA [14]2 years ago
3 0

Answer:

x = - 7

Step-by-step explanation:

- 3x + 7 = 28

- 3x + 7 - 7 = 28 - 7

- 3x = 21

- 3x/3 = 21/3

- x = 7

x = - 7

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Can someone please help me with this problem?
Sophie [7]

Answer:

20

Step-by-step explanation:

4 x 5 = 20

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3 years ago
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Please help!
crimeas [40]

Answer:

The zeros are:

x =4, x=2, x = 5

  • The function has three distinct real zeros.

Hence, option (B) is true.

Step-by-step explanation:

Given the expression

h\left(x\right)=\left(x-4\right)^2\left(x^2-7x+\:10\right)

Let us determine the zeros of the function by putting h(x) = 0 and solving the expression

0=\left(x-4\right)^2\left(x^2-7x+10\right)

switch sides

\left(x-4\right)^2\left(x^2-7x+10\right)=0

as

x^2-7x+\:10=\left(x-2\right)\left(x-5\right)

so

\left(x-4\right)^2\left(x-2\right)\left(x-5\right)=0

Using the zero factor principle

  • \mathrm{If}\:ab=0\:\mathrm{then}\:a=0\:\mathrm{or}\:b=0\:\left(\mathrm{or\:both}\:a=0\:\mathrm{and}\:b=0\right)

so

x-4=0\quad \mathrm{or}\quad \:x-2=0\quad \mathrm{or}\quad \:x-5=0

x =4, x=2, x = 5

Thus, the zeros are:

x =4, x=2, x = 5

It is clear that there are three zeros and all the zeros are distinct real numbers.

Therefore,

  • The function has three distinct real zeros.

Hence, option (B) is true.

4 0
2 years ago
Are these functions?
OlgaM077 [116]

Answer:

Relation 1 : Not a function

R2 : Function

R3: Function

R4: Not a function

7 0
3 years ago
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Mekhanik [1.2K]

Answer:

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Step-by-step explanation:

Cone=1/3bh

B is pir^2

so that means b=pi36 (6*6 =36)

36*15/3 is 565.2

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2 years ago
I need help with geometry
olchik [2.2K]

Answer:

m<1=?

m<2=4x-20..........(1)

m<4=3x-11.............(2)

Step-by-step explanation:

we have

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again.we have

<1+<2=180(co-interior angle)

<1=180-<2=180-(4×9-20)=180-16=164

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3 years ago
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