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3 years ago

Mary can travel 174 miles in 3 hours.at this rate how far can she travel in 7 hours

Mathematics

1 answer:

Aneli [31]3 years ago

8 0

174/3=58 miles in one hour 7*58=406 miles
or you and do 7/3*174=406

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twinlakes on the shelf of a covenience store lose their fresh tastines over time. we say that the taste quality is 1 when the tw

Zolol [24]

Answer:

The graph is shown below.

The time to make the taste to half is <u>4.265 s.</u>

Step-by-step explanation:

Given:

Initial value of the taste is, $Q_0=1$

Therefore, the quality of taste over time 't' is given as:

$Q(t)=Q_0(0.85)^t\\Q(t)=1(0.85)^t$

Now, when the taste reduces to half, $Q=0.5$

Therefore,

$0.5=1(0.85)^t$

Taking natural log on both the sides, we get:

$\ln(0.5)=\ln(0.85)^t\\\ln(0.5)=t\ln(0.85)\\t=\frac{ln(0.5)}{\ln(0.85)}=4.265\ s$

Therefore, the time to make the taste to half is <u>4.265 s.</u>

4 0

3 years ago

Trigonometry Please help.

____ [38]

Tan(angle) = Opposite leg / adjacent leg

Tan(27) = Y / 350

Y = 350 x tan(27)

Y = 178.3 feet.

3 0

3 years ago

Help ASAP!!! 3/8 of the seventh grade students were taking Advanced math at the beginning of the year, but Seven dropped out by

Rashid [163]

Answer:

There are 392 students in the seventh grade.

Step-by-step explanation:

Let us assume that there are x number of students in the seventh grade.

Now, 3/8 of the seventh grade students were taking Advanced math at the beginning of the year, but seven dropped out by the end of the year.

So, after the end of the year there were $(\frac{3}{8}x - 7)$ number of students taking advanced math.

So, as per given condition, $(\frac{3}{8}x - 7) = 140$

⇒ $\frac{3}{8}x = 147$

⇒ x = 392

Therefore, there are 392 students in the seventh grade. (Answer)

8 0

3 years ago

1.1. Which statement explains why the two systems of equations below have the

marin [14]

Answer:

B. The first equation in B is the sum of the equations in A, while the other is obtained

by multiplying the first equation in A by 2.

Step-by-step explanation:

If we add the first two equations that shown in A so

6x + 8y + 2x - 5y = -10 + 12

8x + 3y = 2

Now the first equation in A would be multiplied by 2

2(6x + 8y = -10)

12x + 16u = -20

Therefore the correct option is B.

7 0

3 years ago

3 1/2x + 215 =495 how do you get 80 as x

Fed [463]

Answer:

3 1/2x + 215=495

495-215=280

3 1/2 ÷280

x=80

if this helps

8 0

2 years ago

Read 2 more answers