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erma4kov [3.2K]
3 years ago
14

HELP PLEASE 100 POINTS WILL MARK BRAINLIEST

Mathematics
2 answers:
Sedbober [7]3 years ago
6 0

Answer:

the answer is C.

~batmans wife dun dun dun.....

sweet-ann [11.9K]3 years ago
3 0
Substitution is where you solve for one of the variables and then plug that in for the same variable in the other equation. Here, there is already an equation that is solved for a variable, \sf y=4x-11. So we can plug in '4x - 11' for 'y' in the other equation:

\sf 3x+5y=-9

\sf 3x+5(4x-11)=-9

Distribute 5 into the parenthesis(multiply it to every term in the parenthesis):

\boxed{\sf 3x+20x-55=-9}

Your answer is C.
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PLEASE HELP ME ANSWER THESE QUESTIONS!! (USE IMAGE AND DON'T ANSWER IF YOU'RE NOT GOING TO HELP!!)
Alika [10]

Answer:

5. no

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6 0
2 years ago
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Why is C the answer for this question?
Grace [21]

Step-by-step explanation:

A left Riemann sum approximates a definite integral as:

\int\limits^b_a {f(x)} \, dx \approx \sum\limits_{k=1}^{n}f(x_{k}) \Delta x \\where\ \Delta x = \frac{b-a}{n} \ and\ x_{k}=a+\Delta x \times (k-1)

Given ∫₂⁸ cos(x²) dx:

a = 2, b = 8, and f(x) = cos(x²)

Therefore, Δx = 6/n and x = 2 + (6/n) (k − 1).

Plugging into the sum:

∑₁ⁿ cos((2 + (6/n) (k − 1))²) (6/n)

Therefore, the answer is C.  Notice that answer D would be a right Riemann sum rather than a left (uses k instead of k−1).

8 0
3 years ago
A candle maker has 4 1/2 pound of clear wax. He wants to cut the wax into pieces that are 2/3 pound each.
Vedmedyk [2.9K]
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6 0
3 years ago
Explain how you can check your solution<br>to the equation. Then check the solution.​
Hoochie [10]

Answer:

To check if a given value is a solution to an equation:

Evaluate the left-hand side expression at the given value to get a number.

Evaluate the right-hand side expression at the given value to get a number.

See if the numbers match.

4 0
3 years ago
Please help with this algebra question
valina [46]

Answer:

i think its

P(x) =  i ^{3}

Step-by-step explanation:

8 0
3 years ago
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