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4 years ago

The difference of twice a number and 3 is -21 translated

Mathematics

2 answers:

Westkost [7]4 years ago

7 0

Answer:

2x-3=-21.

2x=-21+3.

2x=-18.

x=-18/2.

x= -9.

a_sh-v [17]4 years ago

5 0

Answer:

$\Huge \boxed{2x-3=-21}$

Step-by-step explanation:

Let the number be x.

The difference of two values is the result from subtracting them.

$2x-3=-21$

Add 3 to both sides.

$2x=-18$

Divide both sides by 2.

$x=-9$

The number is -9.

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What is the solution set of the following equation? 6x^2 = 13x + 5

fiasKO [112]

Answer:

2nd

Step-by-step explanation:

using the quadric formula

$- ( - 13) + - \sqrt{( - 3) {}^{2} - 4 \times 6( - 5) } \div 2 \times 6$

do the math and you get the second one.

{-1/3,5/2}

6 0

3 years ago

If the constant of variation is 12 and y = 36, what does x equal?

exis [7]

Y=kx
k=constant of variation

given
k=12
y=36

36=12*x
divide both sides by 12
3=x

x=3

8 0

4 years ago

Point F is at (0, -10) and point H is at (-6, 5). Find the coordinates of point G on line segment FH such that the ratio of FG t

Tanya [424]

Answer:

G(x,y)=(-4,0)

Step-by-step explanation:

We use the section formula:

$(x,y)=\left(\dfrac{mx_2+nx_1}{m+n}, \dfrac{my_2+ny_1}{m+n}\right)$

Given:

$F(x_1,y_1)=(0, -10)\\H(x_2,y_2)=(-6, 5)\\FG:GH=m:n=2:1$

We substitute the values to get:

$G(x,y)=\left(\dfrac{2*-6+1*0}{2+1}, \dfrac{2*5+1*-10}{2+1}\right)\\=\left(\dfrac{-12}{3}, \dfrac{10-10}{3}\right)\\=\left(\dfrac{-12}{3}, \dfrac{0}{3}\right)\\\\G(x,y)=(-4,0)$

5 0

3 years ago

Anybody who is good with word problems and (who has done these before) plz help thx!!! :DD

vovikov84 [41]

1. $\frac{x}{15} = 3$

2. 8x = 216

6 0

3 years ago

Read 2 more answers

I need help on how to get the answer too number 27.

KiRa [710]

A^2 + b^2 = c^2
3^2 + 8^2 = c^2
9 + 64 = c^2
73 =c^2
take the square root of each side
c= 8.544

3 0

3 years ago