hey ok so i’m having trouble with my math test and i need help ASAP. someone please help me answer the following questions.

Answer:

You would have 10 cents.

Step-by-step explanation:

Answer:

So, we know that a square has all sides equal. We need to multiply 15 by 15 to get the area of the square.

A = L x W

A = 15 x 15

   = 225cm squared

Therefore, your answer is 225cm squared.

Answer: [tex]8x^2-10x-6[/tex]

Step-by-step explanation:

Given : length =  [tex]3x^2-5x+1[/tex] , width = [tex]x^2-4[/tex]

Perimeter of rectangle  = 2 ( length + width)

Then,  Perimeter of given rectangle  = [tex]2 (3x^2-5x+1+x^2-4)[/tex]

[tex]=2 (4x^2-5x-3)\\\\= 8x^2-10x-6[/tex]

Hence, the  correct expression for perimeter = [tex]8x^2-10x-6[/tex]

Answer:

h

Step-by-step explanation:

Answer:

ok

[tex]\pi = \frac{22}{7} or \: 3.142[/tex]

Step-by-step explanation:

[tex]c = 2\pi \: r \\ c = 2 \times \frac{22}{7} \times 15 \\ 94.28[/tex]

Answer:

C = 90 units²

Step-by-step explanation:

Since we are using 3 for π, simply substitute the information into the equation:

C = 2(3)(15)

C = 90 units²

Answer:

i think 48 is the correct answer

Answer:

A-0 B-4 C-5 D-3.5 E-6 F-4.5

Step-by-step explanation:

I followed the steps

Answer:

2, 2.5, 3, 3.5, 4, 4.5

Step-by-step explanation:

Answer:

y = 3x

2y + 2x = 85

x = 10 5/8 y = 31 5/8

Step-by-step explanation:

Let’s say that y = length and x = width. We know that the length is 3 times the width (y = 3x) and the perimeter of the rectangle is 85 (2y + 2x = 85). To solve the system of equations, substitute y = 3x into the other equation. This results in the equation 2(3x) + 2x = 85. We now simplify the equation. 6x + 2x = 85 8x = 85 x = 10 5/8.

Now that we know x, we can substitute it into either equation to solve for y. y = 3(10 5/8) y = 31 5/8

The  system of equation which represent the given situation is 85 = 8x.

And the length and width of the rectangle is 36.86 and 10.62unit respectively.

Perimeter is the distance around the edge of a shape.

[tex]P = 2(l+w)[/tex]

where,

P is the perimeter of the rectangle

l is the length of the rectangle

w is the width of the rectangle.

According to the given question here:

We have,

The perimeter of the rectangle is 85 unit.

Let the width of the rectangle be x unit.

Then, the length of the rectangle be 3x.

Therefore, the equation which represent the situation is given by

85 = 2(x + 3x)

⇒85 = 2(4x)

⇒ 85 =8x

⇒ x = 85/8 = 10.62unit

⇒ 3x = 10.62 × 3 = 31.86 unit.

Hence, the length of the given rectangle is 31.86 unit and width is 10.62 unit .

Learn more about the perimeter of the rectangle here:

https://brainly.com/question/15287805

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Answer:

D

Step-by-step explanation:

The correct diagram is D.

The diagram that   shows the correct setup for an electromagnet is Option D)

The correct setup of an electromagnet involves the following steps:

1. Obtain a ferromagnetic core, such as iron, steel, or a magnetic material.

2. Wrap an insulated wire around the ferromagnetic core, forming a coil.

3. Connect the ends of the wire to a power source, such as a battery or power supply.

4. When current flows through the wire, it creates a magnetic field, magnetizing the core and forming the electromagnet.

5. The strength of the electromagnet can be controlled by adjusting the current flowing through the wire.

Learn more about electromagnet  at:

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Answer:

B

Step-by-step explanation:

We can determine that it is sin, not cos, because the equation goes through the origin (0, 0).

The amplitude is 2 and since the amplitude is a for an equation in the form of asinx, the equation must have 2sinx.

Finally, the period is pi. The regular period of sinx is 2pi, so inside of the si, x must be multiplied by 2, which gets us to 2sin(2x).

I hope this helps! :)

Answer:

B.

Step-by-step explanation:

The 6 has moved up because of addition instead of subtraction

Answer:

I think it is C you should practice This is easy

Step-by-step explanation:

Answer:

1062882

Step-by-step explanation:

Seven digits numbers, with repetition of digits, having 6 or 9 at the last one's place :

The first six digits can be filled with 9 options each (numbers 1 to 9) , & the last digit can be filled with 2 options (number 6 & 9)

So, total 7 digit numbers as per given condition = 9 x 9 x 9 x 9 x 9 x 9 x 9 x 2 = 1062882

Answer and Step-by-step explanation:

Let us assume two boys are jogging.

Boy 1 jogging speed is 10 kilometres per hour

Boy 2 jogging speed is 20 kilometres per hour

This can be represented in terms of distance, d and time, t. When we do this, we have:

d = 10t boy 1

d = 20t boy 2

This implies that boy 1 rate of change is 10 kilometers for every one hour and boy 2 is 20 kilometers for every 1 hour.

From here, we can conclude that the rate of change of boy 2 is twice the rate of change of boy 1.

Answer:

c)30%

Step-by-step explanation:

Step one:

given data

The shopkeeper said each pair of earrings cost Rs. 12

if he offered 12 pairs for Rs. 100.

let us find the cost per pair

= 100/12

=Rs. 8.3 per pair

Required

The percent discount

Step two:

%percent discount= 12-8.3/12*100

%percent discount= 3.66/12*100

%percent discount= 0.305*100

%percent discount= 30.5%

Answer:

Solution in photo

Step-by-step explanation:

Answer:

SHE ADDED THE COST OF THE HAIRCUT TO HER BALANCE.

Step-by-step explanation:

Instead of debited the cost of the haircut stephanie done the mistake by entering the charges of the hair cut into her balance. So due to this, the wrong entry should be recorded.

Therefore the above situation represents the situation in which she did the wrong

Hence, the same is to be considered

Answer:

The percent increase should be 42%

Step-by-step explanation:

Subtract 131 from 92, you'll get 39

Divide, 39/92=423913....

Simply, I got 42%

Answer:

z=-1

Step-by-step explanation:

8z+7=-15

8z=-15+7

z=-8/8

z=-1

Exact Form:

z = − 11/4

Decimal Form:

z == − 2.75

Mixed Number Form:

z = − 2  3/4

HOPES THIS HELPS YOU!!

PLEASE MARK MINE AS BRAINLIEST???

Answer:

Is there more of the problem i dont see the what y and x are equivalent to

Step-by-step explanation:

Answer:

100

Step-by-step explanation:

Givens

WX = 4 + 3 = 7

ZY = 7 + 6 = 13

Height = 4 + 6 = 10

Formula

Area = (WX + ZY ) * height /2

Solution

Area = (7 +13)*10 / 2

Area = 20*10/2

Area = 200/2

Area = 100

a)11cm

b)25cm

you do 44cm divide by 4 which equals to 11

Answer:2

Step-by-step explanation:

Answer:

you have to use the comment box brainly wont let you private message people

Step-by-step explanation:

lol U~U

Answer:

0.428x

Step-by-step explanation:

The price of a smart phone is "x" and is discounted 40% for a special promotion.

Step 1

The price after the discount is:

40% of x

= 40x/100

= 0.4x

Step 2

We calculate the exact amount the sales tax is.

You must also pay 7% sales tax on this purchase.

= 7% × 0.4x

= 7/100 × 0.4x

= 0.028x

Step 3

The final price for this purchase is calculated as:

0.4x + 0.028x

= 0.428x

Hence, the final price for this purchase is 0.428x