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Reika [66]
3 years ago
13

Which of the following is a solution to the equation −25x = 10?

Mathematics
1 answer:
blagie [28]3 years ago
6 0

Answer: x=-0.4

Step-by-step explanation:

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If there is a class of 30 students and 6 of them are off, what fraction of students are there and what percentage of students ar
elena-s [515]
As fraction it would be 6/30 reduced 1/5 and as percentage 20% so 20% of the students were off.<span />
3 0
3 years ago
Joseph built a model of a pyramid where
monitta

Answer:

7

Step-by-step explanation:

\sqrt{49}  = 7

4 0
3 years ago
340 students went to the first school dance, the last school dance 306 students attended. What is the percent of change between
Fofino [41]

Answer:

10.59%

Step-by-step explanation:

percentage of change is given by

{(old number - new number)/old number} * 100

_________________________

given

no. of student  went to the first school dance = 340

no. of student  went to the last school dance = 306

Percentage of change between two dance

= ((no. of student  went to the first school dance - no. of student  went to the last school dance)/ no. of student  went to the fist school dance)*100

= (340 - 306)/340 *100

= (36/340 )*100 = 10.59%

The percent of change between the two dances 10.59%.

4 0
3 years ago
A city skyscraper is 1,450 feet tall. A scale model is made that is 1:290 of its size. How tall is the model?
icang [17]

Answer:

Height of skyscraper's model = 5 feet

Step-by-step explanation:

Given:

Height of skyscraper = 1,450 feet

Scale model ratio = 1:290

Find:

Height of skyscraper's model.

Computation:

Height of skyscraper's model = Height of skyscraper × Scale model ratio

Height of skyscraper's model = 1,450 × (1/290)

Height of skyscraper's model = 5 feet

7 0
3 years ago
Meanwhile, at the ballpark Juan was practicing his hitting while talking to the girls standing around watching. He started telli
Naddik [55]

Answer:

5.2 seconds

Step-by-step explanation:

We want to determine the value of x when h(x) = 0

:

-16x^2 +83x + 4 = 0

:

use quadratic formula to determine the value for x

:

x = ( -83 + sqrt(83^2 - 4*(-16)*4) ) / (2*(-16) = −0.047753182

:

x = ( -83 - sqrt(83^2 - 4*(-16)*4) ) / (2*(-16) = 5.235253182

:

we want the positive value for x since time runs forward

:

the ball hung in the air for approx 5.2 seconds

7 0
3 years ago
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