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Stels [109]
3 years ago
9

Subtract 5x+4 from 2x−8

Mathematics
2 answers:
swat323 years ago
8 0

Answer:

x= -4/3

Step-by-step explanation:

If you want it in a fraction

2x-5x-8+4 = -3x-4

-3x-4=0 and then add the 4 to the zero, making it 4

-3x=4 then divide each side by -3

x=-4/3

sp2606 [1]3 years ago
4 0

Answer:

x=4

Step-by-step explanation:

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The base of a triangle exceeds the height by 7 centimeters. If the area is 400 square centimeters, find the length of the base a
zvonat [6]

Answer:

Base = 32 cm

Height = 25 cm

Step-by-step explanation:

Area of a triangle can be calculated as:

Area = \frac{1}{2}\times Base \times Height

We are given that the base of triangle exceeds the height by 7 cm. This can be expressed in an equation form as:

Base = Height + 7

Lets use B to represent base and H to represent height

B = H + 7

The equation of area can be stated as:

Area=\frac{1}{2}bh\\\\ Area=\frac{1}{2}(h+7)(h)\\\\ 400=\frac{1}{2}h(h+7)\\\\ 800=h^{2}+7h\\\\ h^{2}+7h-800=0

This is a quadratic equation which can be solved using a quadratic equation as shown below:

h=\frac{-7+-\sqrt{49-4(1)(-800)} }{2(1)} \\\\ h=\frac{-7+-57}{2}\\\\h=-32,25

Since the height cannot be negative, we'll consider the positive value only i.e height is equal to 25 cm.

Therefore, the length of base will be 25 + 7 = 32 cm.

8 0
4 years ago
Simplify 12 to the sixteenth power over 12 to the fourth power.
marishachu [46]
The answer is 8916100448256
3 0
3 years ago
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kompoz [17]

Answer:

6:09

Step-by-step explanation:

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5 0
3 years ago
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10. Complete the table below based on the following function:f(x)=-6x-1
zepelin [54]

<span>f(x)=-6x-1

</span><span> X    Y
 0    -1
 -1    5
 6    -37
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5 0
3 years ago
5(x+3)-5<br> simplify this.
nignag [31]

Answer:

5x+10

Step-by-step explanation:

Distribute:

=(5)(x)+(5)(3)+−5

=5x+15+−5

Combine Like Terms:

=5x+15+−5

=(5x)+(15+−5)

=5x+10

8 0
3 years ago
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