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2 years ago

24. If 2x-7=3, then 3x+1 = 1.4 2.5 3.7 4.12 5. 16

Mathematics

1 answer:

Vika [28.1K]2 years ago

4 0

Answer:

Step-by-step explanation:

if 2x-7=3

2x=3+7

2x=10

x=5

then

3(5)+1=16

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Can anyone help me with this?

matrenka [14]

Answer:

$\sqrt{7}$

Step-by-step explanation:

Given

4 $\sqrt{7}$ - 10 $\sqrt{7}$ + 7 $\sqrt{7}$ ( add the coefficients of the terms )

= (4 - 10 + 7) $\sqrt{7}$

= 1 $\sqrt{7}$

= $\sqrt{7}$

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2 years ago

Please help!!!<br> Which expression is equivalent to (3m^-1n^2)^4/(2m^-2n)^3

Elza [17]

$\text{Use:}\\\\(a\cdot b)^n=a^nb^n\\\\(a^n)^m=a^{n\cdot m}\\\\\dfrac{a^n}{a^m}=a^{n-m}$

$\dfrac{(3m^{-1}n^2)^4}{(2m^{-2}n)^3}=\dfrac{3^4(m^{-1})^4(n^2)^4}{2^3(m^{-2})^3n^3}=\dfrac{81m^{-4}n^8}{8m^{-6}n^3}\\\\=10.125m^{-4-(-6)}n^{8-3}=10.125m^2n^5$

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2 years ago

Read 2 more answers

How to Solve -5x is greater than or equal to 40

brilliants [131]

Answer:

Step-by-step explanation:

You have to divide -5 from each side so -5/-5x which would be x and divide -5 by 40 which is -8 so x is greater than or equal to -8

4 0

2 years ago

PLEASE HELP ASAP

Vlad [161]

Answer:

1 : 6 . . . . or 1/6

Step-by-step explanation:

We know 1 foot is 12 inches, so 5 feet is 5·12 = 60 inches. Zachary's scale factor is ...

drawing size : actual size = 10 inches : 60 inches = 1 : 6

This can also be written as the fraction 1/6.

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2 years ago

Can someone help me with this?

jekas [21]

Answer:

$\huge\purple{ x^2 +(y+2)^2 = 4}$

Step-by-step explanation:

Circle is centred at (0, -2)

-> h = 0 & k = - 2

radius of the circle (r) = y-coordinate of the center = - 2

Equation of circle in standard form is given as:

$(x-h)^2 +(y-k)^2 = r^2$

Plugging the values of h, k and r in the above equation, we find:

$(x-0)^2 +[y-(-2)]^2 = (-2)^2$

$\implies\huge\orange{ x^2 +(y+2)^2 = 4}$

This is the required equation of circle.

6 0

1 year ago