Fluency two step equations

Renata moved to her new home a few years ago. Back then, the young oak tree in her back yard was 190 centimeters tall. She measu

ANTONII [103]

1.

The equation for this problem would be

y = (?)x + 190

With y being the height after a given amount of years and x being the amount of years passing. We would need to find ?, the rate of how fast the tree grows. The problem gives us y = 274 centimeters and x = 3 years

Let’s plug in and solve for ?

274 = ?(3) + 190

84 = ?3

28 = ?

The tree grew 28 cm per year

2.

Since we know the rate of change and y, let’s just plug in values

344 = 28x + 190

154 = 28x

5.5 = x

5.5 years since Renata moved.

3 0

3 years ago

How do you turn 11/4 into a mixed number

irakobra [83]

4 goes into 11 twice
thats 2 for the whole number and for the fraction you have 3/4 left over
so 11/4=2 3/4

7 0

3 years ago

Read 2 more answers

A student spent $18 for a haircut this week. Which event, when combined with the student spending $18, will result in the studen

Helga [31]

Answer:

A. The student earned $18 for cleaning out his neighbor's garage.

Step-by-step explanation:

Since it given that a student spend $18 for a haircut this week also means that she/he gave away $18 also known as -$18.

Thus, base on the given answer choices:

[A] is the only one that can make it positive.

Going through all answer choice:

A. The student earned $18 for cleaning out his neighbor's garage.

Earned = +

B. The student paid his little brother $18 for doing his chores.

Paid = -

C. The student purchased a gift for his mom for $18.

Purchased = -

D. The student gave $18 to a friend.

Gave = -

Hence, Answer is A. The student earned $18 for cleaning out his neighbor's garage.

~lenvy~

4 0

3 years ago

Determine the length across the river, x to the nearest hundred

Ipatiy [6.2K]

Answer:

$x=20.67\ ft$

Step-by-step explanation:

we know that

The Midpoint Theorem says that the line segment joining the midpoints of any two sides of a triangle is parallel to the third side and equal to half of the third side

so

in this problem

Applying the midpoint theorem

$x=\frac{124}{3}:2=\frac{124}{6}=\frac{62}{3}=20.67\ ft$

7 0

3 years ago

A student's grades in the three tests in College Algebra are 85, 60, and 69. a) How many points does the student need on the fin

Anastaziya [24]

Answer:

(a) The student need 82 points on the final to average 74.

(b) The student must score 41 points on the final, assuming that the final carries double the weight.

Step-by-step explanation:

We are given that a student's grades in the three tests in College Algebra are 85, 60, and 69.

As we know that the formula for calculating the average of numbers is given by;

Average (Mean) = $\frac{\text{Sum of all values}}{\text{Number of observations}}$

(a) Let the points student need on the final test to average 74 be ' $x$ '.

So, Average of all four test = $\frac{85+60+69+x}{4}$

$74 = \frac{85+60+69+x}{4}$

$74 = \frac{214+x}{4}$

$214+x =74 \times 4$

$x = 296-214$

$x=82$

Hence, the student needs 82 points on the final to average 74.

(b) It is given that the final carries double the weight, this means that let the points student need on the final test to average 74 be ' $2x$ '.