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mart [117]
2 years ago
15

If x is equal to –2, then find the value of 3x² + 5x​

Mathematics
1 answer:
attashe74 [19]2 years ago
5 0

Answer:

2

Step-by-step explanation:

3*(-2)to power of 2 + 5*-2

= 3*4 + 5*-2

= 12 + -10 = 2

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Expand the fraction 72/125 .so that it has a denominator of 1000.
Dmitrij [34]
X/1000=72/125  multiply both sides by 1000

x=72000/125

x=576

So the fraction is 576/1000
5 0
3 years ago
Which linear inequality is represented by the graph graph​
trasher [3.6K]

Answer: choice A

Step-by-step explanation:

7 0
3 years ago
Determine the area and perimeter of a rectangle that is 13 centimeters wide and 25 centimeters long
Greeley [361]

Answer:

A=325

P=76

Hope this helps.

8 0
3 years ago
Evaluate ∫ e3x cosh 2x dx A.1/ e5x+1/ex+C 10 2 B. 1/ e3x + 1/ x + C 42 C. 1/ e5x + 1/ 10 5 x + C D. 1/ e5x + 1/ ex + C 22
Irina18 [472]
Sh(2x) = (e^2x + e^-2x)/2 

<span>Thus the integral becomes </span>

<span>Int[e^3x*(e^2x + e^-2x)/2] = Int[(e^5x + e^x)/2] </span>

<span>= e^5x/10 + e^x/2 + C 
</span>=(1/10)(e^5x) + (1/2)(e^x) + C
3 0
2 years ago
In trapezoid $ABCD$, $\overline{AB}$ is parallel to $\overline{CD}$, $AB = 7$ units, and $CD = 10$ units. Segment $EF$ is drawn
Mekhanik [1.2K]

Answer:

EF = 58/7

Step-by-step explanation:

If you extend both BC and AD to meet at P you get 3 similar triangles PAB, PEF, and PCD. Let's call BF = 3x and FC = 4x. Therefore the following proportions can be expressed:

BP/7 = (BP+7x)/10

10BP = 7*(BP+7x)

10BP = 7BP+49x

3BP = 49x

BP = (49/3)x

BP/7 = (BP+3x)/EF

EF = (BP+3x)*7/BP

EF = ((49/3)x + 3x)*7/((49/3)x)

EF = ((58/3)x*7*3)/(49x)

EF = 58/7

3 0
2 years ago
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