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Illusion [34]
3 years ago
15

Karin wants to use the distributive property to mentally find the value of 19⋅42+19⋅58. Which expression can she use?

Mathematics
2 answers:
AnnyKZ [126]3 years ago
6 0

Answer:

A

Step-by-step explanation:

dont know how explain.

devlian [24]3 years ago
3 0

Answer:

19( 42+ 58)

Step-by-step explanation:

19 \cdot 42+19 \cdot 58\\

The common factor is 19

19( 42+ 58)

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Anyone know the answers 11 through 20?
Evgen [1.6K]

Step-by-step explanation:

11) x^5

12) 5x^2

13) x+21

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=3*3*3

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=2*2*2*2*2

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5 0
2 years ago
Old McDonald has some chickens and some cows. He counted 56 heads and 116 legs. How many chickens and how many cows does old McD
Elza [17]

Answer: old McDonald has 54 chickens and 2 cows.

Step-by-step explanation:

Let x represent the number of chickens that old McDonald have.

Let y represent the number of cows that old McDonald have.

He counted 56 heads. A chicken and a cow has one head each. It means that

x + y = 56

He counted 116 legs. A chicken has 2 legs and a cow has 4 legs. It means that

2x + 4y = 116 - - - - - - - - -1

Substituting x = 56 - y into equation 1, it becomes

2(56 - y) + 4y = 116

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6 0
3 years ago
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Tamiku [17]

Answer: 112

Step-by-step explanation:

Since we were given m and n, we plug them into the expression and solve.

-2(-6)+4(-5)²            [exponent]

-2(-6)+4(25)            [multiply]

12+100                     [add]

112

Now, we know that the value of the expression is 112.

7 0
2 years ago
Trigonometry<br> Reference Angles and Triangles<br> Find the exact value of sin 135*
Tomtit [17]

Answer:

sqrt(2)/2

Step-by-step explanation:

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= 1/sqrt(2) or sqrt(2)/2

sqrt: square root

4 0
2 years ago
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