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ikadub [295]
3 years ago
7

The perimeter of a rectangle is 38 feet and the height is 7 feet Find the length of the base and the area of the rectangle .

Mathematics
1 answer:
Salsk061 [2.6K]3 years ago
5 0

Answer:

base: 12

area: 84

Step-by-step explanation:

Please let me know if you want me to add an explanation as to why this is the answer. I can definitely do that, I just wouldn’t want to write it if you don’t want me to :)

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Which ordered pair is the best estimate for the solution of the system of equations?
Brums [2.3K]

For this case we have the following system of equations:

y = - \frac {3} {4} x-2\\y = x + 6

Equaling the equations we have:

- \frac {3} {4} x-2 = x + 6\\-2-6 = (1+ \frac {3} {4}) x\\-8 = \frac {7} {4} x\\-32 = 7x\\x = \frac {-32} {7}\\x = -4.57

The variable y:

y = -4.57 + 6 = 1.43

Thus, we can round the solution as:

(x, y): (- 4.5; 1.5)

It is verified with the graph

Answer:

Option C

7 0
3 years ago
A solid has a circular base of radius 3. If every plane cross section perpendicular to the x-axis is an equilateral triangle, th
almond37 [142]
Letter E is correct.
Area of equilateral trianlge= (1/2) tiime a^2 square root 3
Equation for the base is = x^2+y^2 =9

at x ,
y= square root (9-x^2)
Side of triangle a= 2y

d times Volume = (1/2)a^2 square root 3 dx

d times V= (square root 3) (9-x^2) dx

V= square root 3 INT (9-x^2) dx
-3V= 2square root INT (9-x^2) dx
0
V= 2 square root 3 ( 9x-x^3/3)

V=2 square root 3 ( 27-9)
V= 36 square root 3

The answer is E.
5 0
3 years ago
What is the 20th term in the sequence 1/2, 2, 7/2, 5
Nitella [24]
2-0.5=1.5
3.5-2=1.5
Therefore difference is 1.5=n
1.5n-1 is nth term
When n=20
=29
7 0
3 years ago
What is the exact value of the expression the square root 72. − the square root of 8. + the square root of 128.? Simplify if pos
ivann1987 [24]
Remember, the exact value cannot involve any rounding or estimates. Now, let's solve this problem. First, we have to translate it into an expression:

√72 - √8 + √128               separate the terms into square roots

√36·2 - √4·2 + √64·2        square root the terms that you can

6√2 - 2√2 + 8√2               they have like radical terms, so combine the terms

6 - 2 + 8 = 12                   the coefficients are 12 when combined

12√2                                 this is the EXACT VALUE of the expression

Hope this helps! 
3 0
4 years ago
HELP I NEED A ANSWER ASAP
Gnesinka [82]

Answer:

x=-19

Step-by-step explanation:

x-5=2x+14

-x=19

x=-19

6 0
2 years ago
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