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3 years ago

Steve os three times as old as Thresa. in four years he will be twice as old as she will be. How old is each one?

Mathematics

1 answer:

sveticcg [70]3 years ago

4 0

Answer:

Theresa is 4 years old while Steve is 12

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9(11-k)=3(3k-9) plz help solve for k

melisa1 [442]

Distribute...
99 - 9k = 9k - 27
Add 27 to both sides
126 - 9k = 9k
Add 9k to both sides
126 = 18k
Divide by 18
k = 126 / 18 = 7

8 0

3 years ago

Read 2 more answers

Which of the following functions has the largest value when x = 3? c(x) = 3x2 + 5x + 22 j(x) = 12x a(x) = 9x

Olin [163]

To determine the function which has the largest value at x=3,

We will calculate the value of each function by substituting the value of x=3 in each of the given function.

Let us consider the first function,

$c(x)=3x^{2}+5x+22$

$c(3)=3\times 3^{2}+5 \times 3+22$

$c(3)=27+15+22$

$c(3)=64$

Let us consider the second function,

$j(x)=12x$

$j(x)=12 \times 3 =36$

Let us consider the third function,

$a(x)=9x$

$a(x)=9 \times 3=27$

Therefore, the function c(x) has the largest value at x=3.

3 0

3 years ago

Why you should record a 1 in the tens column when you regroup in an addition problem

Salsk061 [2.6K]

Because any number times itself is the number

6 0

4 years ago

Read 2 more answers

. There are 10 beads in a bag. 5 beads are black; 3 beads are white and the rest are red. A bead is picked at random. Find the p

Bingel [31]

Part A

P(white) = (3 white)/(10 total) = 3/10

<h3>Answer: 3/10</h3>

==============================================

Part B

10 total, 3 are white

10-3 = 7 are not white so they are either black or red

P(black or red) = 7/10

<h3>Answer: 7/10</h3>

==============================================

Part C

Earlier in part B we calculated 7 beads that weren't white

This means P(not white) = P(black or red) = 7/10

They are the same probability just phrased slightly different ways.

<h3>Answer: 7/10</h3>

==============================================

Part D

There aren't any blue beads (unless there's a typo somewhere). So the probability of picking not blue is 100% or we represent this as the value 1.

<h3>Answer: 1</h3>

3 0

2 years ago

A certain bag of potting soil is 1/4 peat moss, and the rest is dirt. What part is dirt?

Troyanec [42]

Answer:

$D = 1 - \frac{1}{4}$

$D = \frac{3}{4}$

Step-by-step explanation:

Given:

1 bag of potting soil

$Peat Moss = \frac{1}{4}$

Required

What part is dirt?

The whole bag of potting soil is represented as 1;

Let P represent Peat Moss and D represented Dirt; Such that

$P + D = 1$

Subtract P from both sides

$P - P + D = 1 - P$

$D = 1 - P$

Substitute $\frac{1}{4}$ for P

$D = 1 - \frac{1}{4}$

Take LCM

$D = \frac{4-1}{4}$

$D = \frac{3}{4}$

<em>Hence, </em> $1 - \frac{1}{4}$ <em> or </em> $\frac{3}{4}$ <em> of the potting soil is Dirt</em>

7 0

3 years ago