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timofeeve [1]
3 years ago
6

Hope drove 145 miles in 2.5 hours. what was her speed in miles per hour

Mathematics
1 answer:
erastova [34]3 years ago
5 0
58 miles per hour, because you would divide 145 by 2.5 to get how many miles were covered in one hour
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Please help, I would appreciate it a lot
AleksAgata [21]

Answer:

Sry, Can't help.

It's soo hard!!

8 0
3 years ago
Frank exercises no less than 40 minutes per day use t to represent Frank's amount of exercise minutes per day.
BabaBlast [244]

9514 1404 393

Answer:

  t ≥ 40

Step-by-step explanation:

"No less than" is the same as "greater than or equal to".

  t ≥ 40

5 0
3 years ago
A local artist working at the town fair makes caricatures and portraits. The caricatures cost $4 to make white
il63 [147K]

Answer:

The artist should make 15 caricatures and 30 portraits.

Step-by-step explanation:

First, we identify the variables for the problem. In this case, the variables will be:

C=number of caricatures

P= number of portraits.

Next, we can use the variables to make the inequalities that constrain the problem.

We know the artist can't spend more than $360 for supplies and we also know that it costs $4 to make a caricature and $10 to make a portrait, so:

4C+10P\le 360

We also know the artist has a limit of time of 20 hours, which is the same as 20*60=1200 minutes to paint. We know it takes her 20 minutes to make a caricature and 30 minutes to make a portrait, so:

20C+30P\le 1200

and we also know she must make a positive number of caricatures and a positive number of portraits so the other two constrains are:

C\ge 0

P\ge 0

So we can go ahead and graph them. (see attached picture)

Once we graphed the inequalities we can determine what the corners of the polygon created by the intersection of the shaded areas are, so we proceed and calculate them:

first point:

(0,0)

second point:

4(0)+10P=360

P=\frac{360}{10}

P=36

(0,36)

Third point:

20C+30(0)=1200

C=\frac{1200}{20}

C=60

(60,0)

Fourth point:

4C+10P = 360

20C+30P = 1200

We multiply the first equation by -5 so we get:

-20C-50P=-1800

20C+30P=1200

------------------------

-20P=-600

P=30

so:

20C+30(30)=1200

20C=1200-900

20C=300

C=15

(15,30)

Once we found the 4 points, we go ahead and evaluate them for the objective function. In this case, the objective function is the total amount of money she got from selling the pieces of art, so we get:

I=10C+20P

Point 1

I=10(0)+20(0)=0

Point 2

I=10(0)+20(36)=720

Point 3

I=10(60)+20(0)=600

Point 4

I=10(15)+20(30)=750

Next, we look for the greatest income which in this case will be 750 so that's why she must make 15 caricatures and 30 Portraits.

8 0
3 years ago
HELP ASAP, LINKS AND ABSURD ANSWERS WILL BE REPORTED! I WILL MARK BRAINLIEST!!
STALIN [3.7K]

Answer:

6/5

Step-by-step explanation:

brainly plz

but if one whole is 5 then one has 5 and the other has 1 and 5+1=6 and one whole=5 thus is 6/5

7 0
3 years ago
Using the figure below, select the pair(s) of supplementary angles. (HINT** they may be more than 1 correct answer)
Dafna1 [17]

Answer:

b), d)

Step-by-step explanation:

Supplementary angles add up to 180 degrees.

4 0
2 years ago
Read 2 more answers
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