3 years ago

What is -78.6 (-2.4)? A. -188.64 B. -32.75 C. 32.75 D. 188.64

Mathematics

2 answers:

Nookie1986 [14]3 years ago

4 0

I think is A.......................

musickatia [10]3 years ago

3 0

Answer:

the answer is A

Step-by-step explanation:

multiply the 2 numbers

You might be interested in

Simplify the expression x(2x + 3) + (x - 3)(x - 4)

Art [367]

x(2x + 3) + (x - 3)(x - 4)
=2x^2 + 3x +x^2 -3x -4x + 12
=3x^2 - 4x + 12

6 0

3 years ago

In triangle ABC, AB = 11 cm, BC = 9 cm and CA = 10 cm. Find the area of triangle ABC.

max2010maxim [7]

Answer:

Area = 42.43 square cm

Step-by-step explanation:

Using Heron's Formula :

$Area = \sqrt{s\times (s-a) \times (s-b) \times(s -c)} \ , \ where \ s \ =\ \frac{a+ b+ c}{2}$

Find Area :

$s = \frac{11 + 9 + 10 }{2} = \frac{30}{2} = 15$

$Area = \sqrt{15 \times ( 15 - 11 ) \times { (15 - 9 ) \times ( 15 -10)}\\\\$

$= \sqrt{15 \times 4 \times 6 \times 5}\\\\=\sqrt{1800}$

$= 42 . 43 \ cm^2$

7 0

3 years ago

Need answer pls any of them

Vinvika [58]

Answer:

number 4. 13

because first you do the exponents giving you 8 and then divide which is 2 then you subtract which is 13

5 0

3 years ago

Read 2 more answers

Heres just the last one and I’m good

Scorpion4ik [409]

Answer:

2340

Step-by-step explanation:

15 x 13 ÷ 2 x 24 = 2340

6 0

3 years ago

Read 2 more answers

The line with equation x-3y-27=0 meets the parabola y²=4x at two points. Find their coordinates

lesantik [10]

$x-3y-27=0\\
y^2=4x\\\\
x-3y-27=0\\
x=\frac{y^2}{4}\\\\
\frac{y^2}{4}-3y-27=0\\
y^2-12y-108=0\\
y^2-12y+36-144=0\\
(y-6)^2=144\\
y-6=-12 \vee y-6=12\\
y=-6 \vee y=18\\\\
x=\frac{(-6)^2}{4} \vee x=\frac{18^2}{4}\\
x=\frac{36}{4} \vee x=\frac{324}{4}\\
x=9 \vee x=81\\\\
\boxed{(9,-6),(81,18)}
$

4 0

3 years ago

Read 2 more answers