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lubasha [3.4K]
3 years ago
7

2r + 5x + 8 = 0. Express the answer in a + b/ form.

Mathematics
1 answer:
malfutka [58]3 years ago
7 0

Answer:2r+5x+8=r+5/2(x)=-4

Step-by-step explanation:2r+5x+8

2r+5x=-8

Divide through by 2

r+5/2(x)=-4

=

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The area of the rectangle is 49 square units.
Ilia_Sergeevich [38]

Answer:

\boxed{70 \ \text{units}^{2}}

Step-by-step explanation:

<em>I assume that the </em><u><em>polygon</em></u><em> is made up of a </em><em>rectangle</em><em> and </em><em>two triangles. </em><em>Thus, the </em><em>area</em><em> of the </em><u><em>polygon</em></u><em> is the area of the </em><u><em>triangles</em></u><em> and the </em><u><em>rectangle.</em></u>

<em>≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡</em>

\text{Area of polygon} = \text{Area of rectangle} + \text{Area of triangle}_{1} }  + \text{Area of triangle}_{2}

➡ \text{Area of polygon}= 49 + 7 + 14

➡ {\bold{Area \ of\  polygon = 49 + 21 = \underline{70 \ units}^{2}}

<em>≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡</em>

3 0
2 years ago
It is said that a student’s college GPA (grade point index) can be predicted by his/her HOCS (higher- order cognitive skills) su
cricket20 [7]

Answer:

apart from using the hoc to predict the college students gpa, some other variables can be used

1. the students intelligent quotient

2. ability to remember

3. study time

4. gym practice

Step-by-step explanation:

<u>1. the students intelligent quotient</u>

<u>gpa</u><u> </u>has a positive relationship with iq. they are both directly related. The more the iq of a a student, the greater is his ability to understand and have a good gpa. the slope will therefore be positive and be in an upward direction.

2. <u>ability to remember</u>

the gpa of students who have a good ability to remember but do not have a good grasp of the subject may not be high. the slope would be in a slightly upward direction

3. <u>study time</u>

gpa and practice have a positive relationship. the more a student studies, the more likelihood exists of having a better gpa. the slope would be upward bound.

4. <u>gym</u><u> </u><u>practice</u>

gpa and gym practice are not related so the slope would be in a downward direction.

when interpreting the direction of relationship after carrying out such an analysis, it is useful to watch out for the accompanying signs of the variables. if the sign of the beta coefficient is positive then a positive relationship with the dependent variable exists.

6 0
4 years ago
What is the area of a regular hexagon with an apothem 18.5 inches long and a side 21 inches
earnstyle [38]

The area of a regular hexagon with an apothem 18.5 inches long and a side 21 inches is 1, 165. 5 In²

<h3>How to calculate the area of a regular hexagon</h3>

The formula is given thus;

Area of hexagon = (1/2) × a × P

where a = the length of the apothem

P = perimeter of the hexagon

Given a = 18. 5 inches

Note that Perimeter, p = 6a with 'a' as side

p = 6 × 21 = 126 inches

Substitute values into the formula

Area, A = 1 ÷2 × 18. 5 × 126 = 1 ÷2 × 2331 = 1, 165. 5 In²

Thus, the area of the regular hexagon is 1, 165. 5 In²

Learn more about the area of a hexagon here:

brainly.com/question/15424654

#SPJ1

3 0
2 years ago
Evaluate the expression and enter your answer below. sqrt(25) * sqrt(9)
ololo11 [35]

Answer:

Step-by-step explanation:

√25 * √9   = √(5*5) * √3*3)

                   = 5 * 3 = 15

8 0
4 years ago
What’s the area of the trapezoid ?
WITCHER [35]

Answer:

300

Step-by-step explanation:

find the area of each individual triangle and then add

54+54+96+96=300

5 0
4 years ago
Read 2 more answers
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