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
Temka [501]
3 years ago
10

Math help please? There are 12 more toy cars than toy trucks in a box with a total of 38 toy cars and toy trucks. How many toy t

rucks are in the box? Please explain. I hate this ratio
Mathematics
1 answer:
dlinn [17]3 years ago
7 0
Let, the number of toy trucks = x
Then, number of toy cars = (x + 12)

Now, we have: x + x+12 = 38
2x + 12 = 38
2x = 38 - 12
2x = 26
x = 26/2
x = 13

So, there are 13 toy trucks in total.

Hope this helps!
You might be interested in
Find the value of 1÷3x when X=1​
Keith_Richards [23]

1÷3x when x=1

1÷3×1=1÷3≈0.67

8 0
3 years ago
A 5 lb. bag of organic all-purpose flour costs $6.76. What is the unit price? _ per pound
Sonbull [250]

for 5 lb. bag = $6.76

so, for 1 lb. bag = 6.76/5 = $1.35

So, unit prize is $1.35 per pound.

7 0
2 years ago
Read 2 more answers
A sample of 47 observations is selected from a normal population. The sample mean is 30, and the population standard deviation i
erma4kov [3.2K]

Answer:

We accept the null hypothesis and reject  the alternate hypothesis. There is no evidence to conclude that the population mean is greater than 29. The population mean is less than or equal to 29.

Step-by-step explanation:

We are given the following in the question:

Population mean, μ = 29

Sample mean, \bar{x} = 30

Sample size, n = 47

Alpha, α = 0.05

Population standard deviation, σ = 5

First, we design the null and the alternate hypothesis

H_{0}: \mu \leq 29\\H_A: \mu > 29

a) This is a one-tailed test because the alternate hypothesis is in greater than direction.

We use One-tailed z test to perform this hypothesis.

b) z_{stat} > z_{critical} , we reject the null hypothesis and accept the alternate hypothesis and if z_{stat} < z_{critical} , we accept the null hypothesis and reject  the alternate hypothesis.

c) Formula:

z_{stat} = \displaystyle\frac{\bar{x} - \mu}{\frac{\sigma}{\sqrt{n}} }

Putting all the values, we have

z_{stat} = \displaystyle\frac{30 - 29}{\frac{5}{\sqrt{47}} } = 1.37

d) Now, z_{critical} \text{ at 0.05 level of significance } = 1.64

Since,  

z_{stat} < z_{critical}

We accept the null hypothesis and reject  the alternate hypothesis. There is no evidence to conclude that the population mean is greater than 29. The population mean is less than or equal to 29.

e) P-value is 0.0853

On the basis of p value we again accept the null hypothesis.

5 0
3 years ago
I need help with this
Aliun [14]

-55+13= -42

94i -12i = 82i

answer = -42+82i

4 0
3 years ago
ANSWER ASAP!!! Find the area of the figure.
denis-greek [22]
Area= (3 √(3) × s^2) ÷ s
s= side length
area=(3 √(3) × 16^2) ÷ 16

area= 83.1384387633
7 0
3 years ago
Read 2 more answers
Other questions:
  • Is it possible for a number to be rational and irrational?
    10·1 answer
  • Find the surface area of the regular pyramid shown in the accompanying diagram. If necessary, express your answer in simplest ra
    13·1 answer
  • What are the side lengths of an equilateral triangle with a perimeter of 8 1/4?
    13·1 answer
  • -63-7x factor the expression!!
    13·1 answer
  • A rectangle has length of 5.25 cm and area of 44.625 cm2. What does the length of the rectangle have to be?
    10·1 answer
  • Round 14.5 to a whole number
    11·1 answer
  • I need help plzzzzzzz :))
    9·1 answer
  • 4cm 2cm 5cm 5cm.......
    8·2 answers
  • Solve for x if 2(5x + 2)^2 = 48
    10·2 answers
  • What is 7/12+5/6?<br><br> Add the fractions, please
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!