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3 years ago

PLEASE HELP ME WITH MATH

Mathematics

1 answer:

Alexxandr [17]3 years ago

4 0

Answer:

down below

Step-by-step explanation:

1) 4% of 120 = 4.8, so 120+4.8 = 124.8 cm tall

2) 12% of 6000 = 720 . 6000-720 = 5280 gallons

3) 22% of 200 = 44 . 200-44 = 156

4) 30% of 40 - 12 . 40 - 12 = $28

5) 35% of 140 = $49 . 140 + 49 = $189

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I NEED HELP PLEASE AND SHOW THE WORK PLEASE

Trava [24]

Answer:

6. x = 28 degrees

7. z = 1.6 cm

Step-by-step explanation:

Notice that you can use the property that tells us that the addition of all internal angles of a triangle must give 180 degrees, then you write the following equation:

50 + 69 + (2 x +5) = 180

combine like terms:

119 + 2 x + 5 = 180

124 + 2 x = 180

subtract 124 from both sides:

2 x = 56

divide by 2 both sides:

x = 56 / 2

x = 28 degrees

Problem 7.

If the two triangles are congruent, then the side MN must equal side RS.

Since MN measure 1,8 cm, then RS must also measure 1.8 cm

and we can write the equation:

1.8 = 3 z - 3

adding 3 to both sides:

1.8 + 3 = 3 z

4.8 = 3 z

dividing both sides by 3:

z = 4.8 / 3

z = 1.6 cm

8 0

3 years ago

7th grade work help please<br> will give brainliest:)

Montano1993 [528]

Answer: 67.27

Step-by-step explanation:

7.1 x 7.1 for the square = 50.41

7.1 divided by 2 = 3.55

3.55 x 4.75= 16.86

Normally here you would divide by 2, but you don’t need two because there is 2 triangles that are the same

Add the 50.41 and the 16.86 and you have your answer!

4 0

3 years ago

4.20. According to a report released by the National Center for Health Statistics, 51% of U.S. households has only cell phones (

Sergeu [11.5K]

Answer:

The probability that the household has only cell phones and has high-speed Internet is 0.408

Step-by-step explanation:

Let A be the event that represents U.S. households has only cell phones

Let B be the event that represents U.S. households have high-speed Internet.

We are given that 51% of U.S. households has only cell phones

P(A)=0.51

We are given that 70% of the U.S. households have high-speed Internet.

P(B)=0.7

We are given that U.S. households having only cell phones, 80% have high-speed Internet. A U.S household is randomly selected.

P(B|A)=0.8

$\frac{P(A\capB)}{P(A)}=0.8\\P(A\capB)=0.8 \times P(A)\\P(A\capB)=0.8 \times 0.51\\P(A\capB)=0.408$

Hence the probability that the household has only cell phones and has high-speed Internet is 0.408

7 0

3 years ago

M celebrated celebrated celebrated celebrated

daser333 [38]

Answer: MATH MATH MATH MATH MAAAAAAAAAAAATHHHHHHHHH

3 0

2 years ago

Read 2 more answers

A number b subtracted from 9.8 Is greater than -4

kupik [55]

The solution is: b < 13.8

Step-by-step explanation:

Let b be the number then according to given statement

$9.8-b>-4$

Subtracting 9.8 from both sides

$9.8-b-9.8>-4-9.8\\-b > -13.8$

We have to remove the minus sign in order to get the final solution.

Multiplying by -1

$b < 13.8$

Hence,

The solution is: b < 13.8

Keywords: Inequality, variables

Learn more about inequalities at:

#LearnwithBrainly

3 0

3 years ago