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
Valentin [98]
3 years ago
10

Which expressions are equivalent to the one below? Check all that apply.

Mathematics
1 answer:
musickatia [10]3 years ago
5 0
A ) is not correct because x/x = 1 so you get 10 and not 10x
B) is not correct because 10*10x - 1 = 100x - 1 which is not 10x
C) simillar as B. Not correct
D) is correct. 50x/5 is same as 50/5*x = 10x
E) correct. Straight forward. 50/5 = 10 and when multiplied by x gets 10x
F) x5 or 5x however it is meant to be written is not 10x
You might be interested in
The product of two numbers is 240. The first number is 8 less than the second number. Write an equation can be used to find x
DaniilM [7]

Answer:

The equation x = y-8

The equation  (y-8) y = 240

The first number x = 12 and second number y =20

Step-by-step explanation:

<u>Explanation</u>:-

<u>Step(l)</u>:-

Let 'x' be the first number and 'y' be the second number

Given the product of two numbers is 240

Given  data        x y = 240 …(l)

Given data the first number is 8 less than the second number.

                       x = y-8...(ll)

Substitute (ll) in equation (l) , we get

                           (y-8) y = 240

                           y^{2} -8y -240 =0

                            y^{2} -20y+12y -240 =0

                           y(y -20)+12(y -20) =0

                           (y +12)(y -20) =0

                          y = -12 and y = 20

              Y= -12 is not satisfied

              we can choose y = 20

<u>Step(ll):</u>-

Given data x =y-8

  substitute value y = 20 in x = y -8

                                             x = 20-8 = 12

<u>Final answer</u>:-

The first number x = 12 and second number y =20

4 0
3 years ago
For triangle Abc side a=18 angle C=90 and side b=24 find side c to the nearest whole number
ollegr [7]
...
Using the Pythagorean theorem, a² + b² = c², we can solve for 'c'.
We know the length of sides 'a' and 'b', and this is all we really need to know. The angle value of angle 'c' is irrelevant to finding the length of side 'c' (which I'm assuming is the hypotenuse).
18² + 24² = c².
324 +  576 = c².
900 = c². Now find the square root of 900 to get the value of 'c'.
30 = c. <= And there is your answer.

3 0
3 years ago
The yearbook club is handing out T-shirts to its members. There are 5 blue, 7 green, 9 red, and 4 yellow T-shirts in all. If Jac
damaskus [11]

Answer:

n(R)=9

n(Y)=4

n(B)=5

n(G)=7

n(s)25

probability of getting red =n(R)/n(S)=9/25

6 0
3 years ago
The diameter of a circle is 46 yards. What is the circle's circumference? d=46 yd Use 3.14 for n.​
kolbaska11 [484]

Answer:

144.44 yards

Step-by-step explanation:

The formula to find circumference is: C = π · d

Since we already have most of the factors figured out, we just replace them with what we have.

C = 3.14 · 46 yrds

144.44 = 3.14 · 46

5 0
2 years ago
US average math SAT scores follow a normal distribution with a mean of 505 and a standard deviation of 112. A sample of 64 enter
Hitman42 [59]

Answer:

The claim that the scores of UT students are less than the US average is wrong

Step-by-step explanation:

Given : Sample size = 64

           Standard deviation = 112

           Mean = 505

           Average score = 477

To Find : Test the claim that the scores of UT students are less than the US average at the 0.05 level of significance.

Solution:

Sample size = 64

n > 30

So we will use z test

H_0:\mu \geq 477\\H_a:\mu < 477

Formula : z=\frac{x-\mu}{\frac{\sigma}{\sqrt{n}}}

z=\frac{505-477}{\frac{112}{\sqrt{64}}}

z=2

Refer the z table for p value

p value = 0.9772

α=0.05

p value > α

So, we accept the null hypothesis

Hence The claim that the scores of UT students are less than the US average is wrong

3 0
3 years ago
Other questions:
  • Yelp............................
    15·1 answer
  • + 50 POINTS!!!
    9·1 answer
  • Find the inverse of the given function.<br><br> f(x) = -1/2√x + 3, x ≥ -3
    14·2 answers
  • 8 friends Share two pizzas equally how much does each friend get
    14·1 answer
  • Y/9+5=0<br> solve equation
    11·2 answers
  • For each group of three forces below, determine whether the forces in each pair are pulling at right angles to each other.
    10·1 answer
  • Number graph ranging from negative five to five on the x and y axes. A line is drawn on the graph that passes through the labele
    11·1 answer
  • Amy is making a cake that calls for a 5/6 cup of crushed graham crackers. If she had already crushed 1/2 cup, how much more does
    14·1 answer
  • The number of accidents per week at a hazardous intersection varies with mean 2.2 and standard deviation 1.4. The distribution o
    13·1 answer
  • Please someone help me with the question
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!