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Sunny_sXe [5.5K]
3 years ago
6

Find each sum. 1)-9+(-2) 2)3.2+1.4 3)5.1+(0.7) 4)2.2+(-3.8)

Mathematics
1 answer:
shtirl [24]3 years ago
5 0

Answer:

1. 18

2. 0.36

3. 3. 57

4. -7. 36

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Which one that doesn’t belong ? 1/20, 20/25, 2/3, 5,4 <br> Need help!!
Setler [38]

Answer:

\frac{5}{4}

Step-by-step explanation:

Out of the given options, \frac{5}{4} is the only fraction that is improper. All other options are not improper. Therefore, \frac{5}{4} would not belong is the given group of fractions.

Hope this helps.

3 0
3 years ago
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How many ounces of a silver alloy that costs $5.50 per ounce should be mixed with one that costs $7.00 per ounce to make a new 3
Pepsi [2]

Answer:

<u>135.73 ounces</u> of a silver alloy that costs $5.50 per ounce should be mixed.

Step-by-step explanation:

Given:

A silver alloy that costs $5.50 per ounce should be mixed with one that costs $7.00 per ounce to make a new 30 ounce alloy that costs $6.40 per ounce.

Now, to find the ounces of silver alloy.

Let the silver costs $5.50 per ounce be x.

And the silver costs $7.00 per ounce be y.

So, the total ounce make a new alloy:

x+y=30\\y=30-x  ....(1)

Now, the total costs of silver alloy:

5.50x+7y=6.4

Putting the value of y from equation (1) in the place of y :

5.50x+7(30-x)=6.4

5.50x+210-7x=6.4

-1.5x+210=6.4

<em>Subtracting both sides by 210 we get:</em>

-1.5x=-203.6

<em>Dividing both sides by -1.5 we get:</em>

x=135.73

Therefore, 135.73 ounces of a silver alloy that costs $5.50 per ounce should be mixed.

7 0
3 years ago
Harper wants to exchange £350 for dollars, how many more dollars would she get in the bank than in the post office
musickatia [10]

Answer: $24.50

Post office:£1 = $1.27

£350 = $1.27 × 350 = $444.50

Bank:£1 = $1.34

£350 = $1.34 × 350 = $469

Therefore, the difference will be:

= $469 - $444.50

= $24.50

8 0
3 years ago
HELLO THERE. THIS IS A GEOMETRY QUESTION. ONE REAL ANSWER EQUALS ONE LIKE AND MAYBE BRAINLYIST IF IT ALLOWS ME.
nydimaria [60]

Answer:

104°, 38°, 104°, 38°

Step-by-step explanation:

∠1= ∠3 as opposite angles

and ∠2= ∠4= 38°

∠1= ∠3= 180- 2*38°=104°

4 0
3 years ago
What is the factored form of 6x2 13x 6? (x 4)(x 9) (2x 3)(3x 2) (2x 6)(3x 1) (6x 1)(6x 1).
snow_tiger [21]

Polynomial are expressions. The factored form of the polynomial 6x²+13x+6 is (3x+2)(2x+3).

<h3>What are polynomial?</h3>

Polynomial is an expression that consists of indeterminates(variable) and coefficient, it involves mathematical operations such as addition, subtraction, multiplication, etc, and non-negative integer exponentials.

In order to find the factored form of the given quadratic equation, we will break constant b(13) into two parts such that the sum of the parts is 13, while their product is equal to the product of the constant a(6) and c(6).

Therefore, the solution of the polynomial is,

6x^2+13x+6\\\\= 6x^2 + 9x + 4x + 6\\\\= 3x(2x+3)+2(2x+3)\\\\=(3x+2)(2x+3)\\

Hence, the factored form of the polynomial 6x²+13x+6 is (3x+2)(2x+3).

Learn more about Polynomial:

brainly.com/question/17822016

8 0
2 years ago
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