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4 years ago

Write the equation of the line passing through the points (−1, 2) and (3, 4)

Mathematics

1 answer:

lina2011 [118]4 years ago

6 0

Answer:

2/4

Step-by-step explanation:

Using a graph, you would start at (-1,2). Next you would move up twice. Then you would move 4 lines to the right. You'll land on (3,4)

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75 pencils for $10. find pencils per dollar

musickatia [10]

Do a proportion
10/75= 1/x
Cross multiply and divide

75 x 1= 75
75 divided by 10 is 7.5

Answer is 7.5 pencils per dollar

7 0

3 years ago

2) Evaluate the given numerical expression. A) 9 B) 12 C) 14 D) 21

eduard

Answer:

$\boxed{\sf{14}}$

Step-by-step explanation:

$\boxed{\underline{\text{ORDER OF OPERATIONS:}}}$

Use the order of operations.

Note: PEMDAS or BODMAS stands for:

PEMDAS

Parentheses
Exponents
Multiply
Divide
Add
Subtract

BODMAS

Brackets
Order
Divide
Add
Subtract

First, do parentheses.

3+6*(5+4)÷3-7

(5+4)=9

$\Longrightarrow: \sf{3+6* 9\div 3-7}$

Do multiply and divide.

6*9=54

54/3=18

Then, rewrite the problem down.

$\Longrightarrow: \sf{3+18-7}$

Add.

$\sf{3+18=21}$

$\sf{21-7=\boxed{\sf{14}}$

$\Longrightarrow: \boxed{\sf{14}}$

Therefore, the correct answer is "C. 14".

I hope this helps, let me know if you have any questions.

8 0

3 years ago

What is the measure of R? A. 32 B. 40° C. Cannot be determined D. 64°

Genrish500 [490]

Answer:

A. 32

Step-by-Step Explanation:

∠QRP = 32

if two sides of a triangle are congruent, then the angles opposite those sides are congruent.

∠QRP ∠QPR

Substitute ∠QPR 32° into ∠QRP : ∠QRP 32°

5 0

3 years ago

Read 2 more answers

To snails are 189 cm apart. They crawl towards each other at rates that differ by 1 cm a minute. After 27 minutes they meet. How

Stella [2.4K]

Speed of snail 1 = 3.795 cm/minute

Speed of snail 2 = 4.795 cm/minute

Solution:

Given that,

Total distance = 189 cm

They crawl towards each other at rates that differ by 1 cm a minute

Let the speed of snail 1 be "x"

Let the speed of snail 2 be "x + 1"

Total time = 22 minutes

Since the snails are moving towards each other,

Speed = x + x + 1 = 2x + 1

How fast is each snail crawling?

$Distance = speed \times time\\\\189 = 2x + 1 \times 22\\\\189 = 44x + 22\\\\44x = 189 - 22\\\\44x = 167\\\\x = 3.795$

Thus,

Speed of snail 1 = 3.795 cm/minute

Speed of snail 2 = 3.795 + 1 = 4.795 cm/minute

7 0

3 years ago

Zahara mixed 5 quarts of dry ingredients and 2 quarts of water to make a

krok68 [10]

Answer:

Zahara need to add 4 quarts of water to keep the consistency the same

Step-by-step explanation:

Let

x -----> the amount of dry ingredients in quarts

y -----> the mount of water in quarts

we know that

Batch 1

$\frac{x}{y}=\frac{5}{2}$

Isolate variable y

$y=\frac{2}{5}x$ ----> equation A

Batch 2

For x=10

substitute in the equation A and solve for y

$y=\frac{2}{5}(10)=4$

The ratio batch 2 is $\frac{10}{4}$

therefore

Zahara need to add 4 quarts of water to keep the consistency the same

6 0

3 years ago