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3 years ago

What is the value of the expression 8 - 5(4 + 4)?

Mathematics

1 answer:

Aleksandr-060686 [28]3 years ago

8 0

Answer:

-32

Step-by-step explanation:

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I need help to solve this question.

LekaFEV [45]

Answer:

Step-by-step explanation:

7 0

3 years ago

What's 2/5 - 9/10 as a fraction?

elena-s [515]

Answer:

- 1/2

Step-by-step explanation:

turn 2/5 to have the same denominator as 10

2 ( 2 ) = 4

5 ( 2 ) = 10

4/10 - 9/10

= -5/10

simplify

-5/10 = -1/2

hope this helps

4 0

2 years ago

2, 7, 26, 101, 400, next number in pattern?

uranmaximum [27]

Answer:

1480

Step-by-step explanation:

26 / 7 is 3.7. 2 x 3.7 = 7. 400 x 3.7 = 1480

7 0

3 years ago

Does (1, 4) make the inequality 4x + 2y = 16 true

Fiesta28 [93]

Answer:

no it is false.

Step-by-step explanation:

Because The left side 12 does not equal to the right side 16, which means that the given statement is false.

4 0

3 years ago

The figure the Floor Plan of a balcony ,it consists of △ABC and semi-circle ,

ivanzaharov [21]

Step-by-step explanation:

(a) In right triangle ABC,

$AC^2 =AB^2 +BC^2 \\ = {12}^{2} + {5}^{2} \\ = 144 + 25 \\ = 169 \\ AC = \sqrt{169} \\ \therefore \: AC = 13\: m \\ \\ AC \: is \: the \: diameter \: of \: semicircle \\ \therefore \: r = \frac{1}{2} \times AC = \frac{1}{2} \times 13 = 6.5 \: m \\ Circumference \:of \:semi-circle \\ C = \pi \: r = 3.14 \times 6.5 = 20.41 \:m\:$

Perimeter of Balcony = 12 + 5 + 20.41 = 37.41 m

(b) Area of balcony

$=\frac{1}{2}\times 12\times 5+\frac{1}{2} \pi r^2 \\\\=\times 6\times 5+\frac{1}{2} \times 3.14\times (6.5)^2 \\\\=30+\frac{1}{2} \times 3.14\times42.25\\\\= 30+\frac{1}{2} \times 132.665\\\\= 30 + 66.3325\\\\= 96.3325 \:m^2 \\\\\approx 96. 33\:m^2$

8 0

3 years ago