Please Help!!
Simplify the expression (-3i)(-4i)

Answer:

it is 3

Step-by-step explanation:

Answer:2.4

Step-by-step explanation:

Answer:

I believe it is 2787.6

Step-by-step explanation:

Math

$430.00

Step-by-step explanation:

[tex]7740 \div 18 = 430[/tex]

Answer:

Step-by-step explanation:

.d

The volume of the object is 40cm^3

Let the object in question be a box. The formula for calculating the volume of a box is expressed as:

Given the following paraameters:

Get the volume of the shape.

V = 5cm * 4cm * 2cm

V = 40cm^3

Hence the volume of the object is 40cm^3

Learn more on volumes here: https://brainly.com/question/10751127

Answer:

sry I can't understand how to do this question

Answer:

m  = 2 /5

Step-by-step explanation:

Answer:

k

Step-by-step explanation:

6 is the slope im pretty sure. i followed the slope formula rise over run

( y2-y1 / x2-x1 ) and got 6

Answer:

Step-by-step explanation:

The circumference for a circle is found in the formula

[tex]C=\pi d[/tex]

so if the diamteter is 7, then the circumference is

[tex]7\pi[/tex] or if you are told to round to the nearest hundredth or thousandth, multiply pi in as 3.1415 to get that the circumference is 21.9905 cm

Answer:144

Step-by-step explanation:

Answer:

the answer is 144

160/100×90=144

Answer:

you're lazy count the squares

Step-by-step explanation:

i think i counted 73. You can count the squares again. Then that is the area cm^2

the perimeter i counted 64

Count the edges of the squares and you'll get perimeter. I counted roughly so count carefully.

Step-by-step explanation:

y - 8 = -8(x + 2)

y - 8 = -8x - 16

y = -8x - 8

The slope-intercept form is y = -8x - 8.

Answer:

y = -8x - 8

Step-by-step explanation:

First distribute the -8 into the parentheses

next get the the y by itself

add 8 to both sides and you get

y = -8x - 8

Given:

A test has 10 questions worth 100 points.

Points of each multiple choice question = 4

Points of each open-response question = 12

To find:

The number of multiple choice questions.

Solution:

Let x be the number of multiple choice questions and y be the open-response questions.

According to the question,

Total question : [tex]x+y=10[/tex]         ...(i)

Total points : [tex]4x+12y=100[/tex]      ...(ii)

Form (i), we get

[tex]y=10-x[/tex]         ...(iii)

Putting this in (ii), we get

[tex]4x+12(10-x)=100[/tex]

[tex]4x+120-12x=100[/tex]

[tex]-8x=100-120[/tex]

[tex]-8x=-20[/tex]

Dividing both sides by -8, we get

[tex]x=\dfrac{-20}{-8}[/tex]

[tex]x=2.5[/tex]

Since x is the number of multiple choice questions, so it cannot be a faction value.

Therefore, the number of multiple choice questions in test are either 2 or 3.

Answer:

the answer is (-2,3)

Step-by-step explanation:

when moving to the left you going across the x axis 4 times and going down once om the u axis

Answer:

...

Step-by-step explanation:

Answer:

y=3x

Explanation: Since the line passes through (0,0), the y-intercept is 0. The rate of change is 3, which can be onserved if you you plot these points on a corrdinate graph. Therefore, the equation is y=3x.

Answer:

Charly has the better buy

Step-by-step explanation:

The unit cost is

=16.8/7

=$2.4

Her friend Charles bought 5 pounds of pretzels at the supermarket for $12.75

Unit cost

=12.75/5

=$2.55

Charly got the best deal because the unit cost per item is less than that of the friend

Answer:

C, B

Step-by-step explanation:

C: When you substitute F(0) = -8

B: You just have to find the x value of the lowest point of the graph  

Answer:

y=4

Step-by-step explanation:

4y+2+y=4y+6

4y-4y+y=6-2

y=4

hope it helps

Answer:

4

Step-by-step explanation:

it has gone up 4 lines and left -2 making it go for a (4,-2)

Answer:

B.

Step-by-step explanation:

Answer:

The answer to this issssssss surely B

Answer:

14.9 miles

Step-by-step explanation:

In the image below, the side of the triangle a, represents; "Peter leaves work and drives 10miles due south".

The side of the triangle b represents; "he then heads east for 11 miles to reach his home"

The distance between his work and home is represented by side c of the triangle.

This is a tight angle triangle, hence pythagoras theorem would be applied in solving it.

This theorem states that the square of the hypotenuse of a right angle triangle is equal to the sum of the squares of the other two sides;

This means we have;

c² = a² + b²

c² = 10² + 11²

c = √(100+121)

c = 14.87

Rounding off to the nearest tenths = 14.9

Answer:

Step-by-step explanation:

Well technically 80 is completely reduced but I think your question is square root 80.

So what is the biggest square that can multiply something to get 80?

Well that would be 16.

4Sqrt5 is the completely reduced radical form of square root 80.

Step-by-step explanation:

20 ÷ 2 = S

S represents the students that have straight A's the next year. You would simply divide the current number of students by 2 and it will give you half the student number you had before. And those are the students who still are getting straight A's.

Answer:

1.60

Step-by-step explanation:

:)

Step-by-step explanation:

Let x be the number of Green apples bought.

Then 4x is the number of Red apples bought.

We have x + 4x = 50, so x = 10.

Since there are 10 green and 40 red apples, 40 - 10 = 30 more red apples than green apples.

Answer:

Step-by-step explanation:

(5d^4 - 8)^2

This is a perfect square.

Note an exponent multiplied by an exponent is the addition of them so

d^4 X d^4 = d^8

or

(d^4)(d^4)=d^8

Answer:

2A/p

the last option

Step-by-step explanation:

gl!!!

Answer:

p= 2r/m^2

Step-by-step explanation:

Answer:

B

Step-by-step explanation:

Answer:

No problems here!

Great Job!

Step-by-step explanation: