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3 years ago

11

If f(x)=7-3x and g(x)=3x-7, what is the value of f(1)+g(1)?

1 answer:

kondor19780726 [428]3 years ago

5 0

F(x)=7-3x g(x)=3x-7

First let’s solve for f(1)

f(1)= 7-3(1)

f(1)= 7-3

f(1)= 4 *we will save this for later

Let’s now solve for g(1)

g(1)= 3(1)-7
g(1)= 3-7
g(1)= -4

Now we can find f(1) + g(1)

f(1) =4 and g(1)= -4

4+(-4) = 0

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13x-6y=22 x=y+6 find x and y

Vesna [10]

13x - 6y = 22
x - y = 6
6(x-y) = 6*6
6x - 6y = 36
subtract both the equations
13x - 6x -6y + 6y = -14
7x = -14
x = -2
13*-2 -6y=22
-26 -6y=22
-6y = 48
y = -8
answer: x = -2
y = -8

8 0

2 years ago

What is 1/7 divided by 252 ?

miskamm [114]

Answer:

In decimal form: $0.00056689342$ (If wanted to round to nearest thousandth, $0.001$ )

In fraction form: $\frac{1}{1764}$ or $\frac{28344671}{50000000000}$

Step-by-step explanation:

$\frac{1}{7}\div \:252=\frac{1}{1764}$

$\mathrm{Convert\:element\:to\:fraction}:\quad \:252=\frac{252}{1}\\=\frac{1}{7}\div \frac{252}{1}$

$\mathrm{Apply\:the\:fraction\:rule}:\quad \frac{a}{b}\div \frac{c}{d}=\frac{a}{b}\times \frac{d}{c}\\=\frac{1}{7}\times \frac{1}{252}$

$\mathrm{Multiply\:fractions}:\quad \frac{a}{b}\times \frac{c}{d}=\frac{a\:\times \:c}{b\:\times \:d}\\=\frac{1\times \:1}{7\times \:252}$

$\mathrm{Multiply\:the\:numbers:}\:1\times \:1=1\\=\frac{1}{7\times \:252}$

$\mathrm{Multiply\:the\:numbers:}\:7\times \:252=1764\\=\frac{1}{1764}$

Hopes this helps you!

Have a wonderful night!

Happy Monday!

5 0

3 years ago

A. AA<br>B. SSS<br>C. SAS<br>D. Not Similar

Ierofanga [76]

The answer is D, not similar.

8 0

3 years ago

Three numbers are in the ratio 2:5:7 and their lcm is 490 find the square root of the largest number

ohaa [14]

Answer:

49

Step-by-step explanation:

The ratio of three numbers = 2:5:7

Then the numbers are 2x,5x and 7x

Given that the LCM of these numbers = 490

LCM of 2x,5x,7x is 2×5×7×x = 70x

Then, we have 70x = 490

x = 7

Hence, the numbers are 14, 35 and 49

Largest number = 49

∴The square root of the largest number = 7

5 0

1 year ago

What is the answer ?pls

jeyben [28]

Remark

The only points that can lie on the y axis are a and d. There has to be a zero someplace. But the question is where?

The answer is in the graph below. (0,6) is in red and it is on the y axis.

(6,0) is blue and is on the x axis.

So if you want a point to lie on the y axis, the answer is that the x part of the point must be 0.

Answer D

6 0

3 years ago