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Greeley [361]
3 years ago
10

Evaluate the expression for the given value of the variable(s).

Mathematics
2 answers:
34kurt3 years ago
5 0

The given expression is 5a+5b The given values of a and b are a=-6 ,b=-5

Substituting the values of a and b in the expression we have :

5a+5b= 5(-6)+5(-5)

          = -30 -25 ( when a positive and a negative number is  multiplied the                            result is a negative number)

-30-25=-55 (same signs are added)

The answer to the expression 5a+5b when a=-6 anf b=5 is -55.

[The given options are not correct.]

Lesechka [4]3 years ago
3 0
The answer to what you have there is -55 using order of operations. 5 times -6 is -30. 5 times -5 is -25. add. You get -55.
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Write an equation in standard form of the line that has x-intercept 6 and y-intercept -2
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Step-by-step explanation:

8 0
3 years ago
If anyone can help with either one that’d be great
Volgvan

4.  Solve

1430 = 0.55t^2 + 550

1430 - 550 =880 = 0.55t^2

880/0.55 = 1600 = t^2

t= \pm \sqrt{1600} = \pm 40

On the positive answer makes sense.

Answer: Month 40

5. The throw ends when the height is zero (I guess we're ignoring rolling).

0 = -0.02x^2 + x + 6

x = \dfrac{-1 \pm \sqrt{1^2 - 4(6)(-0.02)}}{2(-0.02)}

Only the negative sign for the plus/minus will give a sensible, positive answer:

x = \dfrac{-1 - \sqrt{1^2 - 4(6)(-0.02)}}{2(-0.02)} = 55.4138

Answer: 55.4 feet

6 0
4 years ago
3(a + b) = 3a + 3b is an example of which algebraic property?
raketka [301]
3(a + b) = 3a + 3b is the distributive property.
4 0
4 years ago
Read 2 more answers
Reduce to simplest form.<br> -3/2 - 3/8
svetlana [45]

Answer:

hope this help you a lot

have a great day

7 0
3 years ago
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