Ask question

Ask question

All categories

valentinak56 [21]

3 years ago

13

a student studies the same amount of time each day for a test in 4 days she studied 60 minutes which equation shows this relatio

nship let x = the number of days

1 answer:

Keith_Richards [23]3 years ago

8 0

Y=mx
m=amount of time per day studied
y=time
x=number of days
we have
60=m(4)
divide by 4
15=m

y=15x

You might be interested in

Which of the symbols correctly relates the two numbers below? Check all that apply. 100 ? 20

Elis [28]

Answer:

>

Step-by-step explanation:

100 is a larger quantity than 20.

Using the <em>is greater than</em> sign shows this relationship between two quantities.

Hope this helps.

-Gumina

3 0

3 years ago

Read 2 more answers

An experienced cashier at a grocery store takes 2 seconds to scan each item and 40 seconds to process the customer's payment. 1)

grigory [225]

Answer:

The correct option is D) 43 items.

Step-by-step explanation:

As we know that total given time is ,

$Y = (60\times2) +6 =126\hspace{0.15cm} sec$ ,

Out of which cashier spends 40 seconds to process the customer's payment.

So the remaining time = (126 - 40) = 86 secs.

And the remaining time is used to scan the item and so that we can calculate here the no items scan is = (86 ÷ 2) = 43.

Therefore we can say that 43 items are being purchased.

6 0

3 years ago

9 times a number has 1 subtracted from it. The result is trebled. The answer is the same if you add 7 to twice the number and mu

Natali [406]

Answer: 4

Step-by-step explanation: 1) You need to first understand the question and a way to do that is to list plainly the information given.

2) Let the number be (X)

3) For the equation from the first sentence given; 3(9x-1)

4) From the second sentence; 7(7+2x)

5) Equating both sentences together, since the question says they are the same 3(9x-1) = 7(7+2x)

6) Opening the bracket/expanding the equation.... 27x-3=49+14x

Solving further we will have 13x = 52

X= 52/13

= 4

3 0

3 years ago

Read 2 more answers

What is the distance between point A and point B? Round to nearest tenth.

Sergeu [11.5K]

Answer:

$d \approx 12.6$

General Formulas and Concepts:

<u>Pre-Algebra</u>

Order of Operations: BPEMDAS

Brackets
Parenthesis
Exponents
Multiplication
Division
Addition
Subtraction

Left to Right

<u>Algebra II</u>

Distance Formula: $d = \sqrt{(x_2-x_1)^2+(y_2-y_1)^2}$

Step-by-step explanation:

<u>Step 1: Define</u>

<em>Find points from graph.</em>

Point A (-4, 2)

Point B (8, 6)

<u>Step 2: Find distance </u><em><u>d</u></em>

Simply plug in the 2 coordinates into the distance formula to find distance <em>d</em>.

Substitute [DF]: $d = \sqrt{(8+4)^2+(6-2)^2}$
Add/Subtract: $d = \sqrt{(12)^2+(4)^2}$
Exponents: $d = \sqrt{144+16}$
Add: $d = \sqrt{160}$
Simplify: $d = 4\sqrt{10}$
Evaluate: $d = 12.6491$
Round: $d \approx 12.6$

7 0

3 years ago

Line a has a slope 2/3 if line be is perpendicular to line a what is line B slope

nika2105 [10]

-3,2

Mark brainliest please

Hope this helps you

8 0

3 years ago