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muminat
3 years ago
6

Use an algebraic method to solve the following equation: x^2+3x-10=0

Mathematics
2 answers:
velikii [3]3 years ago
7 0

Answer:

x=2, -5

Step-by-step explanation:

ohaa [14]3 years ago
7 0

Answer:

x = 2 or x = -5

Step-by-step explanation:

(x−2)(x+5)=0

x−2=0 or x+5=0

x=2 or x=−5

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The length of a rectangle is five more than the width. The perimeter is 130cm. What is the area?
Evgen [1.6K]
<h2>Greetings!</h2>

Answer:

≅ 586.8

Step-by-step explanation:

Take x to be the width, if the length is 5x bigger than the width, then this can be shown by 5x.

The total perimeter is:

(2 * x) + (2 * 5x) because each side has another parallel one.

This means that 2x + 10x = 130

12x = 130

Divide both sides by 12:

\frac{12x}{12} = \frac{130}{12}

x = \frac{65}{6}

So the area = length * width

x * 5x = area

Substitute the values in:

\frac{65}{6} * (5*\frac{65}{6}) = 586.8055... ≅ 586.8

So the approximate area is 586.8


<h2>Hope this helps!</h2>
5 0
3 years ago
Converting decimals into whole nubers
xxMikexx [17]

Answer:you multiply the decimal by the number behind the decimal

Step-by-step explanation:

6.00

6.00x100

6

4 0
2 years ago
Which statements are true regarding undefinable terms in geometry? Check all that apply.
Vanyuwa [196]
I do not have your choices but all the statements that I can think of is the following: A point in the x,y form has two dimensions, a plane has a definite beginning and end, the line has one dimension or length, and finally a point consists of an infinite set of the lines  <span />
7 0
3 years ago
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Carmen lives in Maine and pays 5% in sales tax. She just bought $70 in
galina1969 [7]

Answer:

The correct answer is option A.

Step-by-step explanation:

Let's start by analyzing the information we have.

We know that Carmen pays 5% tax on everything she buys, and has made a purchase of $ 70.

But they also tell us that there is $ 25 of that purchase that will not be charged with taxes.

Therefore, what will be charged with taxes will be:

70-25 = 45

Now we must know how much is 5% of 45 and that we can find out by multiplying 45 by 0,05:

45.0,05 = 2,25

Now that we know that the tax was 2.25, we just have to add it to the total purchase to find out how much Carmen paid:

2.25 + 70 = 72.25

Therefore, the total value of the purchase is 72.25.

8 0
3 years ago
Read 2 more answers
The standard recipe for Hershey’s chocolate is 2/9 cups cocoa and 1/6 cups milk. If Hershey’s decided to pour a total of 14 cups
kifflom [539]

Answer: There are 8 cups of cocoa and 6 cups of milk to make the standard recipe for Hershey's chocolate.

Explanation:

Since we have given that

Number of cups of cocoa is given by

\frac{2}{9}

Number of cups of milk is given by

\frac{1}{6}

Since there are total number of cups of ingredients = 14

First, we find out the ratio of cups of cocoa and milk i.e.

\frac{2}{9}:\frac{1}{6}\\\\=12:9\\\\=4:3

So, Number of cups of cocoa is given by

\frac{4}{7}\times 14\\\\4\times 2\\\\=8

Number of cups of milk is given by

\frac{3}{7}\times 14\\\\3\times 2\\\\=6

Hence, there are 8 cups of cocoa and 6 cups of milk to make the standard recipe for Hershey's chocolate.


4 0
3 years ago
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