1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
dezoksy [38]
3 years ago
11

Find each rate and unit rate 420 miles in 7 hours

Mathematics
1 answer:
Anon25 [30]3 years ago
4 0

the unit rate is 60 mph

You might be interested in
At a sale, books are sold at $90.75 each, which is 75 percent of the original price. What is the original price
lions [1.4K]

\frac{75}{100}  =  \frac{90.75}{x}  \\ x = \frac{90.75 \times 100}{75}  =  \frac{9075}{75}   = 121
the answer is 121
6 0
3 years ago
7x+5/9 ​(Simplify your answer. Use integers or fractions for any numbers in the​ expression.)
Black_prince [1.1K]

nothing can be further simplify in this problem

5 0
3 years ago
Y=-x^2-10x-16 on graph
lana [24]

Answer:

It is a Non-Linear graph:

8 0
3 years ago
A study sampled 350 upperclassmen (Group 1) and 250 underclassmen (Group 2) at high schools around the city of Portland. The stu
iVinArrow [24]

Answer:

-0.061 < P_1 -P_2< 0.025

Step-by-step explanation:

Give data:

n_1 = 350

n_2 =250

x_1 = 23

x_2 = 21

\hat{P} 1 = \frac{x_1}{n_1} = \frac{23}{350} = 0.066

\hat{P} 2 = \frac{x_2}{n_2} = \frac{21}{250} = 0.084

for 95% confidence interval

\alpha = 1 - 0.95 = 0.05 and \alpha/2 = 0.025

z_{\alpha/2} = 1.96  from standard z- table

confidence interval for P_1  and P_2 is

\hat{P} 1 - \hat{P} 2 \pm z_{\alpja/2} \sqrt{\frac{\hat{P} 1(1-\hat{P} 1)}{n_1} +\frac{\hat{P} 2(1-\hat{P} 2)}{n_2}}

(0.066 - 0.084) \pm 1.96 \sqrt{\frac{0.066(1-0.066)}{350} +\frac{0.084(1-0.084)}{250}}

-0.018 \pm 0.043

confidence interval is

-0.018 - 0.043 < P_1 -P_2

-0.061 < P_1 -P_2< 0.025

7 0
3 years ago
2. <br> Simplify the product using FOIL. (2x – 7)(5x + 5)
Svetllana [295]

Answer: 10x - 25x - 35

Step-by-step explanation:

F 2x times 5x = 10x

O 2x times 5 = 10x

I  -7 times 5x = -35x

L -7 times 5 = -35

Hope This Helps :)

3 0
3 years ago
Read 2 more answers
Other questions:
  • Write an inequality involving the variable x that describes the set of numbers graphed.
    10·1 answer
  • It takes Dariya 35 seconds to download 5 songs from the Internet. How can the number of seconds it would take Dariya to download
    7·2 answers
  • How many times longer I s on be mile that one foot
    9·1 answer
  • What is an eqivalent expression for 3 - 5​
    11·1 answer
  • Find the y intercept of the line on the graph​
    15·1 answer
  • What’s 2 + 2? <br> A. 0<br> B. 1<br> C. 2<br> D. 4
    10·2 answers
  • 9/20 as a whole number
    13·2 answers
  • What is 2* 5 equal to?
    12·2 answers
  • Simplifying products and quotients of powers
    7·1 answer
  • Please answer question
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!