Ask question

Ask question

All categories

Angelina_Jolie [31]

2 years ago

15

1. If 4.75x = 12.35, what is the value of x?

1 answer:

Arte-miy333 [17]2 years ago

5 0

Answer:

1. x = 2.6

2. 7x + 1

Step-by-step explanation:

1. If 4.75x = 12.35, what is the value of x?

The equation is 4.75x = 12.35

The value of x can be determined by dividing both sides of the equation by 4.75

4.75x / 4.75 = 12.35 / 4.75

x = 2.6

2. What is 3x + 2 + 4x - 1 after combining like terms

Combining terms with variable x and constant terms (without any variable)

3x + 2 + 4x - 1

3x + 4x + 2 - 1

7x + 1

You might be interested in

Brad says that if a second number is 125% of the first number, then the first number must be 75% of the second number. Is he cor

olga55 [171]

Answer: He is not correct.

Steps:

Let x1 and x2 be the first and second number, respectively.

$x_2 = \frac{5}{4}x_1\\\frac{4}{5}x_2 =x_1$

In words, if the second is 125%, or 5/4 of the first number (first equation),

then the first is 4/5 of the second, which is 0.8 or 80%.

8 0

2 years ago

A proportional relationship is graphed on the coordinate plane. The line that represents the relationship passes through points

Marrrta [24]

Answer: I think its D. 1:5

Step-by-step explanation:

but im not surr

4 0

2 years ago

Polygon YYY has an area of 111111 square units. Celia drew a scaled version of Polygon YYY using a scale factor of 333 and label

KonstantinChe [14]

Answer:

The ratio of the areas = the ratio of the squares of the scale factor.

So the area of Z is 3^2 * 11 = 99 sq units.

7 0

2 years ago

The ratio of the lengths of the sides of △ABC is 3:6:7. M, N, and K are the midpoints of the sides. Perimeter of △MNK equals 7.4

artcher [175]

Answer:

AB=2.775

BC=5.55

CA=6.475

Step-by-step explanation:

Since midpoints split their sides in half, we can see that the triangle MNK formed by the midpoints will be half the perimeter of the triangle ABC. Since P of MNK = 7.4, we know that the perimeter of ABC = 7.4 * 2, which is 14.8. Now we can split the 14.8 so that it follows the ratio.

3+6+7=16

14.8/16=0.925

AB=0.925*3=2.775

BC=0.925*6=5.55

CA=0.925*7=6.475

8 0

2 years ago

It costs 20 cents to receive a photo and 30 cents to send a photo from a cellphone. C is the cost of one photo (either sent or r

ddd [48]

Answer:

(a) PC(C)= $\left \{ {{0.6 \ \ \ \ x=20} \atop 0.4 \ \ \ \ {x=30}} \right. \\\ 0 \ \ \ \ \ \ \ else$

(b) E[C] = 24 cents

Step-by-step explanation:

Given:

Cost to receive a photo = 20 cents

Cost to send a photo = 30 cents

Probability of receiving a photo = 0.6

Probability of sending a photo = 0.4

We need to find

(a) PC(c)

(b) E[C]

Solution:

(a)

PC(C)= $\left \{ {{0.6 \ \ \ \ c=20} \atop 0.4 \ \ \ \ {c=30}} \right. \\\ 0 \ \ \ \ \ \ \ else$

(b)

Expected value can be calculated by multiplying probability with cost.

E[C] = Probability × cost

E[C] = $0.6\times20 +0.4 \times 30 = 12 + 12 = 24\ cents$

3 0

2 years ago