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Zarrin [17]
3 years ago
5

1)4-2(x + 19) = 50 2)7(x-3)-14=70

Mathematics
2 answers:
zalisa [80]3 years ago
8 0
2x+38=50
2x+38-38=50 -38
2x =12
2x/2 =12/2
x=6
mojhsa [17]3 years ago
7 0

Answer:

1. x=4

2. x=15

Step-by-step explanation:

1. Add '-42' to each side of the equation.

42 + -42 + -2x = 50 + -42

Combine like terms: 42 + -42 = 0

0 + -2x = 50 + -42

-2x = 50 + -42

Combine like terms: 50 + -42 = 8

-2x = 8

Divide each side by '-2'.

x = -4

Simplifying

x = -4

2.

Add '35' to each side of the equation.

-35 + 35 + 7x = 70 + 35

Combine like terms: -35 + 35 = 0

0 + 7x = 70 + 35

7x = 70 + 35

Combine like terms: 70 + 35 = 105

7x = 105

Divide each side by '7'.

x = 15

Simplifying

x = 15

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ou are at the county fair and play a game that involves throwing a baseball at target. You get 3 baseballs, and you win a prize
yaroslaw [1]

Answer:

0.98

Step-by-step explanation:

Prob (Ball target & prize ) = 0.74

Prob (Ball no target & no prize) = 1 - 0.74 = 0.26

Three Balls : Prob (atleast 1 prize) = 1 - Prob (No ball target & no price)

= 1 - (0.26)^3

= 1 - 0.017576

= 0.982424

3 0
4 years ago
Classify the polynomial.<br><br> 3r^5-2r^2+5r
ella [17]
Answer: 5th degree trinomial

The degree is 5 because its the largest exponent of the single variable polynomial.

It's a trinomial because there are 3 terms. The terms are separated by a plus or a minus.
7 0
3 years ago
Compute the measures of center for both the boys and girls data. Describe their differences. Use the terms mean and median to ju
polet [3.4K]

Answer:boys: median=50, mean=46

Girls: median= 33, mean=34

Step-by-step explanation:

Mean is the average. Median is the middle number. Both groups had 10 scores. Boys ranged from 15-81. Girls from 0-75; their mean & median would be less because their scores are less.

6 0
4 years ago
Find the constant of proportionality and unit rate for the data in the table. Then write the equation to represent the relations
Brilliant_brown [7]

Time          Distance                Distance / Time

2hrs          90 miles                  90 miles / 2 hrs =  45 miles / hr

3hrs          135 miles                135 miles / 3 hrs =  45 miles / hr

5hrs          225 miles                 225 miles / 5 hrs =  45 miles / hr

6hrs          270 miles                  270 miles / 6 hrs =  45 miles / hr


Constant of proportionality is 45 miles / hr. This is the same for the four values. The unit rate is also 45 miles / hr.


Let us assume the Distance , d is directly proportional to Time, t

d α t

d = kt

Constant of proportionality is k which is D/T

d = 45t
6 0
4 years ago
A 3,000 piece of direct mailing cost 1,435. Printing cost is $550, about 31/2 times the cost of typesetting. How much did the ty
yanalaym [24]

Answer:

The typesseting cost $ 35.48.

Step-by-step explanation:

Given that a 3,000 piece of direct mailing cost $ 1,435, and printing cost is $ 550, about 31/2 times the cost of typesetting, to determine how much did the typesetting cost the following calculation must be performed:

31/2 = 15.5

550 / 15.5 = X

35.48 = X

35.48 x 15.5 = 550

Thus, the typesseting cost $ 35.48.

3 0
3 years ago
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