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Inessa05 [86]
3 years ago
8

I need help with my khan, plz help meeee (7th-grade math)

Mathematics
1 answer:
adoni [48]3 years ago
6 0

Answer:

The equation is ⇒ 7( x - 0.75 ) = 2.8

The normal price of one cookie = $1.15

Step-by-step explanation:

Let the normal price is x

So, the cost of cookie today is x - 0.75

The price of 7 of them will be $2.8

So the equation will be:

<u> 7( x - 0.75 ) = 2.8</u>

Solve for x:

x - 0.75 = 2.8/7 = 0.4

x = 0.4 + 0.75 = 1.15

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Please help! <br> -<br> -<br> -<br> -<br> -
Jlenok [28]
The answer has to be in y-intercept form. Which is y=mx+b and b can also be neg. y=mx-b. The m is your slope and b is your y-intercept. So A’s slope counting from 3 on the y axis to 1 on the x-axis which is down 2 over 1 so it will be -2/1. And your y intercept is 3. The equation is y=-2x+3. For B its the same thing but no graph. Remember that slope is RISE over RUN. So since the number is on the bottom of the line the rise is 4 and the run is 1. So in this case 10 is your y-intercept. Which means you equation is y=4x+10.

5 0
3 years ago
Can anyone help me ???
lana [24]
The slope would be positive in this case
8 0
3 years ago
Read 2 more answers
How do I find X in this problem
pogonyaev
You know that BC is congruent to x so you need to solve for x using the ratio:
\frac{12}{24}=\frac{x}{BC}

So then we need to find BC.

We know:
A=\frac{base \times height}{2}
28=\frac{BC \times 7}{2}
Therefore BC =8

Then:
\frac{12}{24}=\frac{x}{8}
x=8 \times \frac{12}{24} = 4
4 0
3 years ago
Convert 7.5 to a decimal
julsineya [31]

7.5 is already in decimal form.

3 0
3 years ago
What’s the answer to 4x(x+3) &lt; -24
NARA [144]

The answer to the inequality is expressed as x< 1 and x< -4

<h3>What are inequalities?</h3>

Inequalities are mathematical expressions having both sides unequal or rather not equivalent to each other.

Given the inequality;

4x (x+3) < -24

First, expand the bracket

4x² + 12x < -  24

Let's turn to quadratic inequality

4x² + 12x - 24 < 0

Factorize further

4 ( x² + 3x - 4) < 0

4 ( x² + 4x - x - 4) < 0

4 ( x(x + 4) - 1 (x + 4) ) < 0

4(x - 1) ( x + 4) < 0

expand the bracket

4x - 4 < 0

x < 1

And

4x + 16 < 0

x < -4

Thus, the answer to the inequality is expressed as x< 1 and x< -4

Learn more about inequalities here:

brainly.com/question/25275758

#SPJ1

6 0
1 year ago
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