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
KIM [24]
3 years ago
5

Help me with this plsss

Mathematics
1 answer:
Brrunno [24]3 years ago
5 0

1.

a. 8 x 7 x 1/2 = 56 x 1/2 = 28

b. 24 x 14 x 1/2 = 336 x 1/2 = 168

c. 5 x 12 x 1/2 = 60 x 1/2 = 30

d. 4 x 4.8 x 1/2 = 19.2 x 1/2 = 9.6

2.

two triangles: 2(4 x 8 x 1/2) = 4 x 8 = 32

rectangle: 15 x 8 = 120

total area: 32 + 120 = 152

You might be interested in
Beth is making fruit salad. She adds 4 grapes for every 2 strawberries. If she uses 14 strawberries, how many grapes will she us
kykrilka [37]

Answer:

28 grapes

Step-by-step explanation:

14 divided by 2 is 7 so you multiply 7 by 4 and you get 28

7 0
2 years ago
Read 2 more answers
Solve for x. 45(15x+20)−7x=56(12x−24)+6
Nady [450]

Answer:

The value of the equation for x is x=\frac{1119}{2} or 559.5.

Step-by-step explanation:

Consider the provided equation.

45(15x+20)-7x=56(12x-24)+6

We need to solve the equation for x.

Use the distributive property: a(b+c)=ab+ac

45(15x+20)-7x=56(12x-24)+6

675x+900-7x=672x-1344+6

Add the like terms.

668x+900=672x-1338

Isolate the variable as shown:

672x-668x=900+1338

4x=2238

x=\frac{2238}{4}

x=\frac{1119}{2}

Hence, the value of the equation for x is x=\frac{1119}{2} or 559.5.

4 0
3 years ago
Read 2 more answers
A pew research Center project on the state of news media showed that the clearest pattern of news audience growth in 2012 came o
KengaRu [80]

Answer:

Step-by-step explanation:

Given that:

the sample proportion p = 0.39

sample size = 100

Then np = 39

Using normal approximation

The sampling distribution from the sample proportion is approximately normal.

Thus, mean \mu _{\hat p} = p = 0.39

The standard deviation;

\sigma = \sqrt{\dfrac{p(1-p)}{n} }

\sigma = \sqrt{\dfrac{0.39(1-0.39)}{100} }

\sigma = 0.048

The test statistics can be computed as:

Z = \dfrac{{\hat _{p}} - \mu_{_ {\hat p}} }{\sigma_{\hat p}}

Z = \dfrac{0.3 - 0.39 }{0.0488}

Z = -1. 8 4

From the z - tables;

P (\hat p \le 0.3 ) = P(z \le -1.84)

\mathbf{P (\hat p \le 0.3 ) = 0.0329}

(b)

Here;

the sample proportion = 0.39

the sample size n = 400

Since np = 400 * 0.39 = 156

Thus, using normal approximation.

From the sample proportion, the sampling distribution is approximate to the mean \mu_{\hat p} =  p = 0.39

the standard deviation \sigma_{\hat p} = \sqrt{\dfrac{p(1-p)}{n} }

\sigma_{\hat p} = \sqrt{\dfrac{0.39 (1-0.39)}{400} }

\sigma_{\hat p} =0.0244

The test statistics can be computed as:

Z = \dfrac{{\hat _{p}} - \mu_{_ {\hat p}} }{\sigma_{\hat p}}

Z = \dfrac{0.3 - 0.39 }{0.0244}

Z = -3.69

From the z - tables;

P (\hat p \le 0.3 ) = P(z \le -3.69)

\mathbf{P (\hat p \le 0.3 ) = 0.0001}

(c) The effect of the sample size on the sampling distribution is that:

As sample size builds up, the standard deviation of the sampling distribution decreases.

In addition to that, reduction in the standard deviation resulted in increases in the Z score, and the probability of having a sample proportion  that is less than 30% also decreases.

6 0
2 years ago
If you invest $1,500 today in a bank that gives you a 5 percent annual interest rate, which of these items can you buy in two ye
Andre45 [30]
<span>First, we must calculate the amount that will be available after two years. This is given by: Amount = initial amount * (1 + interest rate)^time Amount = 1500 * (1 + 0.05)^2 Amount = $1,653.75 Therefore, the only items you can buy using this amount are the electronics worth $1,650</span>
3 0
3 years ago
Read 2 more answers
1. Bailey made 5 - cups of applesauce. He
madam [21]

Answer:

2 cups

Step-by-step explanation:

6 0
3 years ago
Other questions:
  • Rebecca has 45 coins, all nickels and dimes. The total value of the coins is $3.60. How many
    12·1 answer
  • Plzzz help will give the brainliest for correct answer
    15·2 answers
  • which of the following shows the polynomial below written in decreasing order 5x^3-x+9x^7+4+3x^11 HELLLPPPPPPPPPPPPP a.3x^11+9x^
    5·1 answer
  • Joey has a beach ball with a radius of 20 cm what's the volume of air will it hold when fully infflated
    15·1 answer
  • If the measures of two sides of a triangle are 3 feet and 7 feet, which of the following is a possible whole number measure for
    15·2 answers
  • What is the length of leg s of the triangle below?
    12·1 answer
  • Does the point (2, 3) lie on the graph of y =3x-4? explain.
    10·1 answer
  • If the line joining (3x, x+1) and (11,12) has a slope of 4 what is the value of x​
    12·1 answer
  • Please help :)<br> Given ΔCAT≅ΔDOG, which statement is true?
    13·2 answers
  • A pharmaceutical sales representative makes a base salary of ​$ 64,700 per year. In​ addition, she can earn an annual bonus of u
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!