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Dima020 [189]
3 years ago
9

Solve for x in this equation. 7^3x-17 = 49^x

Mathematics
2 answers:
love history [14]3 years ago
4 0
Answer: x=17

Write in exponential form: 7^3x-17 = 7^2x
3x-17=2x
-2x -2x
————-
X=17
vlada-n [284]3 years ago
3 0

Answer:

X = 17

Step-by-step explanation:

If you created equivalent expressions with equal bases that should be the answer.

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4x-15=25 what’s the answer to this? It’s a two step equation
nadezda [96]

Answer:

x=10

Step-by-step explanation:

4x=40

x= 40/4

x=10

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3 years ago
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Divide: 0.364 ÷ 7<br> 5.2<br> 0.52<br> 0.052<br> None of these is correct.
Lena [83]

Step-by-step explanation:

0.364 ÷ 7 = 0.052

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the third answer option is correct.

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A gravel company sells gravel by the cubic yard and charges a flat delivery fee. The table shows the total cost C based on the a
Sergio039 [100]

Answer:

<h2>$60.</h2>

Step-by-step explanation:

The cost for 0 cubic yards of gravel refers to the y-intercept of the function.

First, we find the constant ratio of change

r=\frac{284-124}{7-2}=\frac{160}{5}=32

The constant ratio of change is 32, that means the cost per cubic yard of gravel is $32.

Now, we just subtract this ratio twice to find the relations until we have x = 0.

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So, for 1 cubic yard, the cost is $92.

92-32=60

For 0 cubic yards, the cost is $60, that's the y-intercept or the initial condition.

Therefore, the answer is $60.

6 0
3 years ago
The sum of two numbers is 11. The sum of their squares is 65. Find the numbers. (How do you get the answer?)
Stels [109]
X is the number
<span>The sum of two numbers is 11, so other number is : 11 - x

</span><span>The sum of their squares is 65
</span>
x^2 + (11 - x)^2 = 65
x^2 + 121 - 2(x)(11) + x^2 = 65
2x^2 - 22x + 121 = 65
2x^2 - 22x + 121 -  65 = 0
2x^2 - 22x + 56 = 0
2(x^2 - 11x + 28) = 0
2(x - 7)(x -4 ) = 0
x - 7 = 0
x = 7

x - 4 =0
x =4

answer: the numbers are 4 and 7

double check:

<span>sum of two numbers is 11:
4 + 7 = 11

</span><span>The sum of their squares is 65
</span><span>4^2 + 17^2 = 16 + 49 = 65

</span>
7 0
3 years ago
What is the value of f(x), if x is -8?
tensa zangetsu [6.8K]

Answer:

-8f

Step-by-step explanation:

you will substitute in the numbers and multiply

Because f is a variable you write the -8 and attach the f to it

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