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
Ludmilka [50]
3 years ago
15

If the dimensions of a rectangular playground can be represented as (4x - 5) and (3x + 7), then what is the

Mathematics
2 answers:
olga55 [171]3 years ago
4 0

Answer:

6xx^{2} + 41x + 48

Step-by-step explanation:

denis23 [38]3 years ago
3 0

Answer:

10m and 45m

Step-by-step explanation:

Just did it

You might be interested in
Can someone please help thank you
denis-greek [22]

Answer:

Step-by-step explanation:

the graph is known to be the infinite set of points on the line

4 0
3 years ago
Use the multiplication property of equality to multiply both sides of the equation by 1/6 to get: (1/6)6x=(1/6)48.
zzz [600]
X= 8 because by multiplying the fraction with a whole number you had to to convert it to i a fraction and that equals one and then 1/6 times 48 is 8
5 0
2 years ago
Which equation can be used to solve for the rate, r, for Sam to change all the light bulbs in the office building by himself?
Bad White [126]

Answer:

\frac{3}{r}+\frac{3}{8}=1

Step-by-step explanation:

Given question is incomplete; here is the complete question.

Working together, Sam and Charlie can change all light bulbs in the office building in 3 hours. It would have taken Charlie 8 hours to do the job alone. Which equation can be be used to solve for the rate 'r', for Sam to change all the light bulbs in the office building by himself.

Let Sam can change the bulbs in the office alone in 'r' hours  

Per hour work done by Sam alone = \frac{1}{r}

Let Sam takes he time to change the same bulbs in the office alone = 8 hours

Per hour work done by Sam = \frac{1}{8}

Since, Sam and Charlie complete the work together in time = 3 hours

Therefore, per hour work done by both = \frac{1}{3}

Equation for per work done by both will be,

Per hour work done by both = Per hour  work done by Sam alone + Per hour work done by Charlie

\frac{1}{r}+\frac{1}{8}=\frac{1}{3}

Therefore, equation for the rate 'r' will be,

\frac{1}{r}+\frac{1}{8}=\frac{1}{3}

\frac{3}{r}+\frac{3}{8}=1

8 0
2 years ago
Read 2 more answers
Tiffany buys a basket of watermelons on sale for \$9$9dollar sign, 9 before tax. The sales tax is 9\%9%9, percent. What is the t
vladimir2022 [97]
Given that the basket of watermelons sells for $9 before tax and the tax rate is 9%.

The tax on the basket of watermelons is given by

\frac{9\%}{100\%} \times\$9=0.09\times\$9 \\  \\ =\$0.81

Therefore, the total price Tiffany pays for the basket of watermelons is $9 + $0.81 = $9.81
8 0
3 years ago
Read 3 more answers
Assume that 200 babies are born to 200 couples treated with the XSORT method of gender selection that is claimed to make girls m
JulsSmile [24]

Answer:

a) test statistic = 2.12

b) p-value = 0.017

c) we reject the Null hypothesis

Step-by-step explanation:

Given data :

N = 200

girls (x) = 115 , Boys = 85

p = x / n = 115 / 200 = 0.575

significance level ( ∝ ) = 0.1

<em>aim : test whether the proportion of girls births after the treatment is greater than 50% that occurs without any treatment </em>.

<u>A) Determine the test statistic </u>

H0 : p = 0.5

Ha : p > 0.5

to determine the test statistic we will apply the z distribution at ( ∝ ) = 0.1

Z - test statistic = ( 0.575 - 0.5)  / \sqrt{0.5*0.5 / 200}  = 2.12

<u>b) determine the p-value</u>

The P-value can be determined using the normal standard table

P-value = 1 - p(Z< 2.12 )  =  1 - 0.9830 = 0.017

c) Given that the p value ( 0.017 ) < significance level ( 0.1 )

we will reject the H0 because there is evidence showing that proportion of girls birth is > 50%

3 0
2 years ago
Other questions:
  • True or False, if two triangles can be moved so that they line up perfectly , they are congruent
    8·1 answer
  • Evaluate the expression.<br> 2’5 + 2 (12 – 7) x 4 =
    10·1 answer
  • Watch help video
    8·1 answer
  • What is the number of square units in the area of the triangle is vertices are points A ( 2,0), B( 6,0) and C (8,5)
    14·1 answer
  • What is the area of the polygon?
    11·1 answer
  • If the sides of two similar triangles are in the ratio 4:9, what is the ratio of their perimeters?
    8·1 answer
  • Please help me! Thank you so much (question inserted below)
    7·1 answer
  • Can some one please help me
    15·1 answer
  • A square fits exactly inside a circle with each of the vertices being on the circumference of the circle. The square has sides l
    12·1 answer
  • Write these numbers in order, starting with the smallest.
    10·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!