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2 years ago

I'm struggling in this subject so if you'd give a step-by-step explanation that'd be great thx

Mathematics

2 answers:

defon2 years ago

8 0

A. First you must start by plugging in your equation solve Y = 2(5) + 1 then you must simplify by solving your 2×5+ 1 and then you end up with Y equals 11

B. Again plug in your equation Y = 2(-5) + 1 then you must simplify by solving your 2×-5+ 1 and then you end up with Y equals -10+ one which simplifies to y = -9

I hope this helps

spayn [35]2 years ago

6 0

Here the equation given to us is,

${\blue{\boxed{\pink{y = 2x + 1}}}}$

Now what we have to do is, we have to put the value of x in brackets () in both the equations . Why we have to put value of x in a bracket?

This is because 2 is being multiplied by the variable x. So let's solve the equations

a) When x = 5, what is the value of y?

Put the value of x here

y = 2x + 1

y = 2(5) + 1

y = 10 + 1

y = 11

b) When x = -5, what is the value of y?

y = 2x + 1

y = 2(-5) + 1

y = -10 + 1

y = -9

ANSWERS :-

a) y = 11

b) y = -9

You might be interested in

Five more than twice a number is -13. Find the number. helpp

likoan [24]

2n+5 = -13

subtract 5 from each side

2n +5-5 = -13 -5

2n = -18

divide each side by 2

n = -18/2

n = -9

8 0

3 years ago

The crayola crayon company can make 2400 crayons in 4 minutes.How many crayons can they make in 15 minuttes

scZoUnD [109]

4 x n = 2400 x 15Find the cross products
4n = 36000Multiply
n = 9000Divide both sides by 4

The Crayola crayon company can make 9000 crayons in 15 minutes.

hope this helps :)

6 0

3 years ago

The little Mexican restaurant sells only two kinds of beef burritos mucho beef sandwich Lucho beef last week the restaurant orde

Finger [1]

Answer:

Cost of a single Mucho beef burrito: $\$5.5$

Cost of a double Mucho beef burrito: $\$6.5$

Step-by-step explanation:

<h3> The exercise is: "The Little Mexican restaurant sells only two kinds of beef burritos: Mucho beef and Mucho Mucho beef. Last week in the restaurant sold 16 orders of the single Mucho variety and 22 orders of the double Mucho. If the restaurant sold $231 Worth of beef burritos last week and the single neutral kind cost $1 Less than the double Mucho, how much did each type of burrito cost?"</h3>

Let be "x" the the cost in dollars of a single Mucho beef burrito and "y" the cost in dollars of a double Mucho burrito.

Set a system of equations:

$\left \{ {{16x+22y=231} \atop {x=y-1}} \right.$

To solve this system you can apply the Substitution Method:

1. Substitute the second equation into the first equation and solve for "y":

$16(y-1)+22y=231\\\\16y-16+22y=231\\\\38y=231+16\\\\y=\frac{247}{38}\\\\y=6.5$

2. Substitute the value of "y" into the second equation and evaluate in order to find the value of "x":

$x=6.5-1\\\\x=5.5$

5 0

3 years ago

-(x + 8) = -x

White raven [17]

Answer:

Step-by-step explanation:

i can help

Step 1

-(x + 8) = -x Simplify

Step 2

-(x + 8) = -x Simplify the sides of the equation

-x-8=-x

Step 3

-x-8=-x Add x to the sides

-8=0

Step 4

-8=0 Add 8 to the sides

0=8

Answer

No solution

Hope this helps

5 0

3 years ago

The Ironman endurance race has a 2.4 miles swim. Javier can swim 0.5 miles in 20 minutes. If he can continue this pace, it will

Dafna1 [17]

Given :

The Ironman endurance race has a 2.4 miles swim.

Javier can swim 0.5 miles in 20 minutes.

To Find :

How much time in hours it takes to complete the race.

Solution :

Speed of Javier :

$s=\dfrac{2.4}{\dfrac{20}{60}}\ mph\\\\s= 7.2\ mph$

Let, time taken to cover 2.4 miles is t .

So,

$t = \dfrac{2.4}{7.2}\ hours\\\\t = 0.33\ hours$

Hence, this is the required solution.

7 0

3 years ago

I'm struggling in this subject so if you'd give a step-by-step explanation that'd be great thx​

I'm struggling in this subject so if you'd give a step-by-step explanation that'd be great thx