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notsponge [240]
3 years ago
14

Evaluate a+4 when a=7

Mathematics
2 answers:
slavikrds [6]3 years ago
5 0

Answer:

11

Step-by-step explanation:

Sub in 7 for a

olga nikolaevna [1]3 years ago
4 0

Answer:

11

Step-by-step explanation:

a+4

Let a=7

7+4

11

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B)simplify the expression <br> 7x2 + 4x – 2 + 8x2 – 9x – 5
konstantin123 [22]

Answer:

=25x-7

Step-by-step explanation:

4 0
3 years ago
Willy says the slope of the graph is -1/3.what error did she make when finding the slope
Nadusha1986 [10]

Answer:

you did not add a picture or any other over fractions.

Step-by-step explanation:

3 0
3 years ago
I=prt for t I=105 p=700 and r=0.05
Pachacha [2.7K]
t = 3   

Simple interest will be derived by multiplying the principal, the interest rate, and the term.

Interest = Principal x Rate x Term

Interest = 105
Principal = 700
Rate = 0.05
Term = ?

Based on the Simple Interest formula, 

term = Interest / principal x rate
term = 105 / (700 x 0.05)
term = 105 / 35
term = 3

7 0
3 years ago
What is lim x→-3 sqrt x^2-8
vitfil [10]

If the  -8 is under the square root, then...

\displaystyle L = \lim_{x\to -3} \sqrt{x^2-8}\\\\L = \sqrt{(-3)^2-8}\\\\L = \sqrt{9-8}\\\\L = \sqrt{1}\\\\L = 1\\\\

OR

If the -8 is not under the square root, then...

\displaystyle L = \lim_{x\to -3} \sqrt{x^2}-8\\\\L = \sqrt{(-3)^2}-8\\\\L = \sqrt{9}-8\\\\L = 3-8\\\\L = -5

Either way, we replace x with -3 and simplify.

For more information, refer to the direct substitution rule for limits.

4 0
1 year ago
Find polynomial whose zeros are 3 and -4​
horrorfan [7]

Answer:

Simplest polynomial: x²+x-12

Step-by-step explanation:

zeroes of polynomial= 3,-4

Therefore,

f(3) =0

f(-4)=0.

By factor Theorem

(x-3) and (x+4) are factors

so simplest polynomial is

(x-3)(x+4)

= x² - 3x + 4x -12

= x² + x -12

.

Hope it helps

6 0
3 years ago
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