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scoray [572]
3 years ago
6

Find the value of x

Mathematics
1 answer:
erik [133]3 years ago
6 0

Answer:

x= 1.74

Step-by-step explanation:

Area of triangle= ½ ×base ×height

We are given that the base is (x +4), the height is x and the area is 5.

5= ½(x +4)(x)

Multiply both sides by 2:

x(x +4)= 10

Expand:

x² +4x= 10

x² +4x -10= 0

Let's use the quadratic formula!

\boxed{x =  \frac{ - b± \sqrt{ {b}^{2}  - 4ac} }{2a} }

x =  \frac{ - 4± \sqrt{ {4}^{2}  - 4(1)( - 10)} }{2(1)}

x =  \frac{ - 4± \sqrt{56} }{2}

x= 1.74 or x= -5.74 (reject)

(nearest hundredth)

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timurjin [86]
You would need 14 cases. You multiply 150 times 2 to get 300 which is 2 cases of soap per day and you multiply 7 days in a week by 2 and you let math magic happen
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4 years ago
To get to work, you drive for 20 minutes at 30 mph, and walk 10 more minutes at 3 mph. What was your average speed?
fiasKO [112]
<span>Note D = r(t)
20min = 1/3 hr and 10min = 1/6 hr

(1/3hr)30mph + (1/6hr)3mph = 10.5 mi, the total distance traveled.

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4 years ago
What is the value of x?<br> please help!!
Lesechka [4]

Answer:

28°

Step-by-step explanation:

soln

(x+3)°+(2x+3)°

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4 0
4 years ago
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the probability that it will rain tomorrow is 0.85what is the probability that it will not rain tomorrow​
bija089 [108]

Answer:

.15

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4 0
3 years ago
Brienne and 3 friends bought tickets to the movies. They spent a total of $27.00 on the tickets. Which equation represents this
Sindrei [870]
Hello!

The equation that represents this situation is A. 3t = 27.

Explanation:

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