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horrorfan [7]
3 years ago
9

F (t) = 2t - 5 find f(7)

Mathematics
2 answers:
jeyben [28]3 years ago
7 0

Answer:9

Step-by-step explanation:2(7)-5=9

anzhelika [568]3 years ago
6 0

Answer:

explanation=

2(7)-5

14-5

=9

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harina [27]
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Mm A is correct I think. The question was unclear but A is the only correct function
5 0
2 years ago
. A recipe for cookies calls for 2/3 of a cup of sugar per batch of cookies. Elena used 5 and 1/3 cups of sugar to make multiple
Cerrena [4.2K]
Answer: 8 batches
Step-by-step explanation:
To get the number of batches she made, we can just use proportion to solve it. But first, we need to convert 5 1/3 to improper fraction
5 1/3 = 16/3
Then we can now use the proportion to solve
2/3 cups = 1 batch
16/3 cups = x (note:5 1/3=16/3)
cross multiply
2/3 × x = 16 /3
2x/ 3 = 16/3
we need to make x the subject of the formula, to do that we will multiply each side of the equation by 3/2
2/3 × 3/2 x = 16/3 × 3/2
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Therefore she made 8 batches of cookies.
4 0
3 years ago
Read 2 more answers
The ages of trees in a forest are normally distributed with a mean of 25 years and a standard deviation of 4. Approximately what
harkovskaia [24]

Answer:

78.88%

Step-by-step explanation:

We have been given that

\mu=25,\sigma=4,x_1=20,x_2=30

The z-score formula is given by

z-\text{score}=\frac{x-\mu}{\sigma}

For x_1=20

z_1=\frac{20-25}{4}\\\\z_1=-1.25

For x_2=30

z_2=\frac{30-25}{4}\\\\z_2=1.25

Now, we find the corresponding probability from the standard z score table.

For the z score -1.25, we have the probability 0.1056

For the z score 1.25, we have the probability 0.8944

Therefore, the percent of the trees that are between 20 and 30 years old is given by

0.8944 - 0.1056

= 0.7888

=78.88%

6 0
3 years ago
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How many lines of symmetry are found in a regular polygon with 80 sides?
IrinaVladis [17]

Answer:

80cause there are 80 sides


3 0
3 years ago
You buy a book of 5 basketball tickets for $62.50. What is the rate of cost per ticket?
Kisachek [45]
12.50 as 12.50 x 5 is 62.50 or as we know 62.50 for 5 we do 62.50/5 to get 12.50
4 0
3 years ago
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