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xenn [34]
3 years ago
15

Pls i have less time Evaluate the expression for k = –4. –6 + 21k =

Mathematics
1 answer:
Vera_Pavlovna [14]3 years ago
3 0

Answer:

is -90

Step-by-step explanation:

−6+(21)(−4)

=−6+−84

=−90

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If f(1) = 13 and f '(x) ≥ 3 for 1 ≤ x ≤ 3, how small can f(3) possibly be?
tangare [24]

Answer:

The answer to this question is 19.

Step-by-step explanation:

Given that :

f(x)=13.

f'(x)=3.   1 ≤ x ≤ 3.

Integrate

∫f'(x) dx=∫3 dx

f(x)=3x+c        1 ≤ x ≤ 3.

f(1)= 3+c  

c=13-3 =10.

f(x)=3x+10  1 ≤ x ≤ 3.

now ,

f(3)=3(3)+10=19.

So f(3) is at least 19.

6 0
3 years ago
maria brought a blouse on sale for 20% off. the sale price was $21.76. what was the original price? round to the nearest hundred
Degger [83]

Answer: $27.20

Step-by-step explanation:

She bought a blouse for 20% off so it means that she paid 80% of the original price.We can then set up the equation  

80% of x = 21.76   where x is the original price so solve for x

0.8x = 21.76  

x = 27.20

Which  means the original price is $27.20

4 0
4 years ago
Nick had 34 bottles of water for his wrestling practice.
zepelin [54]

Answer:

No I disagree, because he had 34 bottles of water at the start but, when he finished he only has 1 left. 34-1=33 so in reality he drank 33 bottles of water.

Step-by-step explanation:

5 0
3 years ago
Read 2 more answers
The cost of fertilizing a lawn is​ $0.25 per square foot. find the cost to fertilize the triangular lawn whose base is left pare
Alexeev081 [22]
To Calculate the cost of <span>The cost of fertilizing, we need to Calculate first the Area of the Triangle.

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</span>The cost of fertilizing = the cost of the square foot x the total area = 0.25x524.08 = 131 <span>$</span>
6 0
3 years ago
Use the distributive property to rewrite each algebraic expression: Do not solve, just rewrite.
cestrela7 [59]
I am not positive for the factoring of each expression but for the distributive property you do 8 TIMES x then 8 times 7 so you would get blank plus blank and so on for the next ones.
3 0
4 years ago
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