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Darina [25.2K]
3 years ago
15

What is the reciprocal of -2/7

Mathematics
2 answers:
dezoksy [38]3 years ago
4 0

Just flip it to find recipricol to be

-7/2

Charra [1.4K]3 years ago
3 0

the reciprocal of -2/7 is 7/-2

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Yoooooooooooooooo I need help
S_A_V [24]

Answer:

13/5 which is 2.6 so A.

Step-by-step explanation: Reduce the expression, if possible, by cancelling the common factors.

6 0
3 years ago
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Find the measure of angle A when two angles are congruent?
erica [24]

m∡A = 70º

1) Considering that the Sum of the interior angles within a triangle is always 180º

2) We can write the following, and solve for x

x+80 + x +80 +40 = 180

2x +160 +40 = 180

2x + 200 = 180

2x =180-200

2x= -20

x=-10

3) So since angle A = x +80, we can plug it into that the value of x

m∡A = x +80º

m∡A=-10+80

m∡A = 70º

4 0
1 year ago
Chad created a table that shows the ratio of his role playing game cards.
Anuta_ua [19.1K]

Answer:

b

Step-by-step explanation:

i looked it up on google so there im right

7 0
3 years ago
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I want to fined out the digree of polynomial 5 x^4 + 3 x^2 + 1
grigory [225]

Answer:

4

Step-by-step explanation:

The degree of a polynomial is the highest degree of a monomial contained within the polynomial. The degree of the monomial is the sum of the exponents on the variables. Example, the degree of -4x^6y is 6+1=7.

Example, the degree of 4x^8 is 8.

So the degree of 5x^4 is 4.

The degree of 3x^2 is 2.

The degree of 1 is 0 since there is no variable in this expression.

So the degree of 5 x^4 + 3 x^2 + 1 is 4.

4 0
3 years ago
Bethany has $3.10 in nickels and dimes. She has a total of 44 coins. What is the value of the nickels Bethany has?
lesantik [10]
0.05n + 0.1d = 3.10
n + d = 44

d = 44 - n

Substituting to the first equation:

0.05n + 0.1(44 - n) = 3.10
0.05n + 4.4 - 0.1n = 3.10
-0.05n = 3.10 - 4.4
n = 26

Obtaining the value of nickels:
26 * 0.05 = 1.3

Therefore, the value of nickels that Bethany has is $1.30
8 0
3 years ago
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