Number 1. ............................l.........

Mark bought a notebook for $1.45 and some pencils for $0.42 each. If the total cost was $6.91, how many pencils did he buy?

Lesechka [4]

B - 13

Okay, we know that Mark brought 1 notebook and the totally is 6.91 while one pencil costs $0.42.

x= number of pencils he brought.
we know the price of 1 notebook + the cost of pencils times the numbers of pencils he brought = total cost.

So the equation will be:

1.45 + 0.42x = 6.91 subtract 1.45 on both sides.
0.42x = 5.46 Then we solve for x by dividing both sides by 0.42
x= 13

So the number of pencils he brought is 13.

5 0

3 years ago

Read 2 more answers

Can someone please help me on this one

likoan [24]

You know vertical Angles SRU and TRV are congruent.

You are given that Sides UR and VR are congruent.

You are given that Angles SUT and SVT are congruent.

An appropriate choice is the ASA postulate, since you have congruent angles with congruent sides in between.

4 0

3 years ago

Triangle ABC will be dilated according to the rule D Subscript F, 0.25(x,y), where point F is the center of dilation. On a coord

just olya [345]

Answer:

(1, 0)

Step-by-step explanation:

correct answer

3 0

4 years ago

Read 2 more answers

The town of Madison has a population of 25{,}00025,00025, comma, 000. The population is increasing by a factor of 1.121.121, poi

cestrela7 [59]

Answer:

$P(t)=25,000(1.12)^t$

Step-by-step explanation:

we know that

The equation of a exponential growth function is given by

$P(t)=a(b)^t$

where

P(t) is the population in Madison

t is the number of years

a is the initial value

b is the factor of growth

we have

$a=25,000\ people\\b=1.12$

substitute

$P(t)=25,000(1.12)^t$

3 0

3 years ago

Identify the variable that is continuous data used discretely. Select all that apply. There are 3 bugs. The bugs are red, yellow

Nata [24]

Answer:

The age of each bug

Step-by-step explanation:

Discrete variables are variables which are counted and can only take on whole number values such as 1, 2, 3...,. For example, the number of students in a class; the number of legs of a spider.

Continuous variables are variables that are measured and can take on a whole range of values such as 1.0, 1.1, 1.2...,. For example, the wingspan of a bug, the length of leaves; the exact age of students in a class.

Though age is a continuous variable if the exact age is required as it can take up a wide range of values such as 2.5 years; 2.3 years, 5.8 days etc,. However, in some instances, it can be rounded up to whole number values in years, months, weeks or even days.

For example, the age of a bug in days could be 1 day, 2 days, or 14 days.

The age of a student who is 12.2 years can be given as 12 years.

8 0

3 years ago