All categories

2 years ago

Natasha used 21 square tiles to make a rectangle. Which of the following could be the dimensions of her rectangle?

Mathematics

2 answers:

laiz [17]2 years ago

7 0

Answer: B. 7x3

This is because 7 times 3 = 21. The other answer choices do not multiply to 21.

Think of it like having 7 rows and 3 columns to give 21 squares overall to make this larger rectangle.

EleoNora [17]2 years ago

3 0

Answer:

7×3

Step-by-step explanation:

option b

i hope it is helpful for you

You might be interested in

The parent cosecant function is shifted 4 units right and 3 units up. Which of the following is the graph of the transformed fun

snow_lady [41]

We have that

using a graph tool--------------> graph the cosecant function
see the attached figure

the answer is the option B

4 0

4 years ago

Read 2 more answers

The graph below shows carters weight each week since he started his diet write an equation for the line of best fit

balandron [24]

Answer:

ŷ = -1.618X + 215.636

191

Step-by-step explanation:

From the graph:

The data below could be obtained to produce the best fit line :

Week, x :

Weight :

216

214

213

210

207

206

202

203

202

200

Using a linear regression calculator. The best fit line obtained is :

ŷ = -1.618X + 215.636 ; which shows decrease in weight has the number of weeks grow.

Carters weight 15 Weeks into his diet :

X = 15

ŷ = -1.618(15) + 215.636

= 191.366

= 191 (nearest whole number)

7 0

3 years ago

Classify the following polynomial by degree and the number of terms.

Vikki [24]

Not too sure but I think it’s A. Linear Trinomial

Hope it helps!

6 0

3 years ago

1. What is the y-intercept? 4x+5y = -15 a. (3, 0) b. (0,-3) c. (x, 0) d. (y, 0)

kipiarov [429]

Answer:

The y-intercept is answer b. (0, -3)

Step-by-step explanation:

To find the y-intercept, fill in x with 0.

4x + 5y = -15

4(0) + 5y = -15

0 + 5y = -15

5y = -15

y = -3

So, the y-intercept would be (0, -3).

6 0

3 years ago

The quantity demanded x each month of Russo Espresso Makers is 250 when the unit price p is $138. The quantity demanded each mon

Stells [14]

Answer:

(a) $D(q)=\frac{-1}{25} q+148$

(b) $S(q)=\frac{1}{50}q+58$

Step-by-step explanation:

(a) For the demand equation D(q) we have

P1: 138 Q1: 250

P2: 108 Q2: 1000

We can find m, which is the slope of the demand equation,

$m=\frac{p_{2} -p_{1} }{q_{2} -q_{1} }=\frac{108-38}{1000-250} =\frac{-30}{750}=\frac{-1}{25}$

and then we find b, which is the point where the curve intersects the y axis.

We can do it by plugging one point and the slope into the line equation form:

$y=mx+b\\\\D(q)=mq+b\\\\138=\frac{-1}{25}(250) +b\\\\138=-10+b\\\\138+10=b=148$

With b: 148 and m: -1/25 we can write our demand equation D(q)

$D(q)=\frac{-1}{25} q+148$

(b) to find the supply equation S(q) we have

P1: 102 Q1: 2200

P2: 102 Q2: 700

Similarly we find m, and b

$m=\frac{p_{2} -p_{1} }{q_{2} -q_{1} }=\frac{72-102}{700-2200} =\frac{-30}{-1500}=\frac{1}{50}$

$y=mx+b\\\\D(q)=mq+b\\\\72=\frac{1}{50}(700) +b\\\\72=14+b\\\\72-14=b=58\\$

And we can write our Supply equation S(q):

$S(q)=\frac{1}{50}q+58$

(c) Now we may find the equilibrium quantity q* and the equilibrium price p* by writing D(q)=S(q), which means the demand equals the supply in equilibrium:

$D(q)=S(q)\\\\\frac{-1}{25}q+148=\frac{1}{50}q+58\\\\$

$148-58=\frac{1q}{50} +\frac{1q}{25} \\\\90= \frac{1q}{50} +\frac{2q}{50}\\\\90=\frac{3q}{50}\\ \\q=1500\\\\$

We plug 1500 as q into any equation, in this case S(q) and we get:

$S(q)=\frac{1}{50}q+58\\\\S(1500)=\frac{1}{50}(1500)+58\\\\S(1500)=30+58\\\\S(1500)=88$

Which is the equilibrium price p*.

8 0

3 years ago