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IgorC [24]
3 years ago
10

Combine like terms to simplify the expression: 1.17-0.07a+(-3.92a)

Mathematics
1 answer:
Pachacha [2.7K]3 years ago
3 0

After combining like terms and simplifying 1.17-0.07a+(-3.92a) we get 1.17-3.99a

Step-by-step explanation:

We need to combine like terms to simplify the expression:

1.17-0.07a+(-3.92a)

Like terms: The terms are like when they have same variable and same exponent.

Solving:

1.17-0.07a+(-3.92a)\\=1.17-0.07a-3.92a\\=1.17+(-0.07a-3.92a)\\=1.17+(-3.99a)\\=1.17-3.99a

So, After combining like terms and simplifying 1.17-0.07a+(-3.92a) we get 1.17-3.99a

Keywords: Solving Expressions

Learn more about Solving Expressions at:

  • brainly.com/question/11207748
  • brainly.com/question/2154850
  • brainly.com/question/4279146

#learnwithBrainly

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Jacob and Sarah are saving money to go on a trip. They need at least $2000 in order to go. Jacob mows lawns and Sarah walks dogs
Paladinen [302]

Answer:

20x+10y\ge 2000

Step-by-step explanation:

Let x represent the number of lawns Jacob mowed and y represent the number of dogs Sarah walked.

Jacob charges $20 each time he mows a lawn, then he earns $20x for x lawns mowed.

Sarah charges $10 each time she walks a dog, then she earns $10y for y dogs walked.

In total, they will earn $(20x + 10y). They need at least $2000 in order to go on a trip, then

20x+10y\ge 2000

Note that x\ge 0,\ y\ge 0.

7 0
3 years ago
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Gnom [1K]

is the answer open circle?

7 0
3 years ago
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A simple random sample of size n=14 is obtained from a population with μ=64 and σ=19.
madam [21]

Answer:

a) A. The population must be normally distributed

b) P(X < 68.2) = 0.7967

c) P(X  ≥  65.6) = 0.3745

Step-by-step explanation:

a) The population is normally distributed having a mean (\mu_x) = 64  and a standard deviation (\sigma_x) = \frac{19}{\sqrt{14} }

b) P(X < 68.2)

First me need to calculate the z score (z). This is given by the equation:

z=\frac{x-\mu_x}{\sigma_x} but μ=64 and σ=19 and n=14,  \mu_x=\mu=64 and \sigma_x=\frac{ \sigma}{\sqrt{n} }=\frac{19}{\sqrt{14} }

Therefore: z=\frac{68.2-64}{\frac{19}{\sqrt{14} } }=0.83

From z table, P(X < 68.2) = P(z < 0.83) = 0.7967

P(X < 68.2) = 0.7967

c) P(X  ≥  65.6)

First me need to calculate the z score (z). This is given by the equation:

z=\frac{x-\mu_x}{\sigma_x}

Therefore: z=\frac{65.6-64}{\frac{19}{\sqrt{14} } }=0.32

From z table,  P(X  ≥  65.6) =  P(z  ≥  0.32) = 1 -  P(z  <  0.32) = 1 - 0.6255 = 0.3745

P(X  ≥  65.6) = 0.3745

P(X < 68.2) = 0.7967

5 0
3 years ago
You need 4/5 cups of strawberriers to make 1 pie how much cups will u need to make 2 pies
Annette [7]

Answer:

1 \frac{3}{5} cups of strawberries

Step-by-step explanation:

To find how much you will need for 2 pies, multiply 4/5 by 2:

4/5(2)

= 8/5

Simplify this to a mixed number:

= 1 \frac{3}{5}

So, you will need 1 \frac{3}{5} cups of strawberries to make 2 pies

8 0
3 years ago
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Ilia_Sergeevich [38]
It would strike <span>672 times. To figure this out all you would do is look up how many minutes is in a week and the divide that number by 15. Hope this helps!</span>
5 0
3 years ago
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