All categories

3 years ago

Where do parentheses go on 7+9x3-1=25

Mathematics

1 answer:

Anna35 [415]3 years ago

7 0

They would go around the multiplication so it should look like 7+(9 x 3) -1=25

You might be interested in

A(x)=(x-3)(x-8) how do you re-write to standard form

pshichka [43]

Answer:

Step-by-step explanation:

$x^{2} -8x-3x+24$

$x^{2} -11x+24$

6 0

3 years ago

What is 204 thousands

max2010maxim [7]

204 thousands equals to 204, 000 as the mathematical value and expression.

In expanded form
200, 000 + 4, 000 = 204, 000

In word form,
Two hundred and four thousand

8 0

3 years ago

Csi geometry transformations answers

Vedmedyk [2.9K]

Yeah what is the question

4 0

3 years ago

The length of a kitchen wall is 24 2/3 feet long. A border will be placed along the wall of the kitchen. If the border strips ar

krek1111 [17]

Total length of the kitchen wall = 24 2/3 feet.

Let us convert 24 2/3 feet into improper fracion.

24 2/3 = (24*3+2)/3 = 74/3 feet.

Length of each strip = 1 3/4 feet.

Let us convert 1/3/4 feet in improper fracion.

1 3/4 feet = (1*4+3)/4 = 7/4 feet.

Total number of strips required = (Total length of the kitchen wall) ÷ (Length of each strip)

= 74/3 feet ÷ 7/4 feet.

Let us convert division sign into multiplication, we get

74/3 × 4/7.

Multiplying across, we get

296/21.

On dividing 296 by 21, we get 14.09 approximately.

14.09 represents more than 14.

So, we can round it to the next whole number, that is 15.

Therefore, 15 strips of border are needed.

5 0

2 years ago

A researcher determines that students are active about 60 + 12 (M + SD) minutes per day. Assuming these data are normally distri

rjkz [21]

Answer:

The correct option is (b).

Step-by-step explanation:

If X $\sim$ N (µ, σ²), then $Z=\frac{X-\mu}{\sigma}$ , is a standard normal variate with mean, E (Z) = 0 and Var (Z) = 1. That is, Z $\sim$ N (0, 1).

The distribution of these z-variate is known as the standard normal distribution.

The mean and standard deviation of the active minutes of students is:

μ = 60 minutes

σ = 12 minutes

Compute the z-score for the student being active 48 minutes as follows:

$Z=\frac{X-\mu}{\sigma}=\frac{48-60}{12}=\frac{-12}{12}=-1.0$

Thus, the z-score for the student being active 48 minutes is -1.0.

The correct option is (b).

4 0

2 years ago