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2 years ago

Write addition sentences (expression) where the sum is zero. can someone make a expression

Mathematics

2 answers:

Tamiku [17]2 years ago

5 0

Answer:

7-7=0

Step-by-step explanation:

Anna had 7 tickets. It was really windy outside and all her tickets flew down into the sewer. How many tickets does she have now?

12345 [234]2 years ago

4 0

(-2)+2=0, (-0.5)+0.5=0, and (-5)+5=0

All those equations answers are 0, please mark me brainiest, and hope I helped!

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What is the area of the triangular flag below?

alexandr1967 [171]

Answer:

Here is your answer

Step-by-step explanation:

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2 years ago

A school is planning to construct two rectangular play areas in the playground. The length of play area A must be 1 foot longer

Anna11 [10]

Answer:

А.The system has two solutions, but only one is viable because the other results in a negative width.

Step-by-step explanation:

Given

Let:

$L_A \to$ length of play area A

$W_A \to$ width of play area A

$L_B \to$ length of play area B

$W_B \to$ width of play area B

$x \to$ Area of A

$y \to$ Area of B

From the question, we have the following:

$L_A = 1 + 4W_A$

$W_B = 2 + W_A$

$L_B = 2 + 3W_B$

$x = y$

The area of A is:

$x = L_A * W_A$

This gives:

$x = (1 + 4W_A) * W_A$

Open bracket

$x = W_A + 4W_A^2$

The area of B is:

$y = L_B * W_B$

$y = (2 + 3W_B) * ( 2 + W_A)$

Substitute: $W_B = 2 + W_A$

$y = (2 + 3(2 + W_A)) * ( 2 + W_A)$

Open brackets

$y = (2 + 6 + 3W_A) * ( 2 + W_A)$

$y = (8 + 3W_A) * ( 2 + W_A)$

Expand

$y = 16 + 8W_A + 6W_A + 3W_A^2$

$y = 16 + 14W_A + 3W_A^2$

We have that:

$x = y$

This gives:

$W_A + 4W_A^2 = 16 + 14W_A + 3W_A^2$

Collect like terms

$4W_A^2 - 3W_A^2 + W_A -14W_A - 16 =0$

$W_A^2 -13W_A - 16 =0$

Using quadratic calculator, we have:

$W_A = -14.1$ or $W = 1.13$ --- approximated

But the width can not be negative; So:

$W = 1.19$

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2 years ago

A credit card company applies a 6% fee on all transactions under $10. You purchased coffee for $4.80. What fee amount will be ap

Romashka [77]

Answer:

$5.08

Step-by-step explanation:

Step one:

given data

We are told that a credit card company applies a 6% fee on all transactions under $10

since the cost of coffee bellow $10 that is $4.80, the 6% fee is applicable

=6% of 4.80

=6/100*4.80

=0.06*4.8

=$0.288

Step two:

the total fee will be

=0.288+4.80

= $5.08

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2 years ago

Factor completely: z^9-d^6

jeka57 [31]

Answer: with the power of 9 − 1 with the power of 6

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7 0

2 years ago

Read 2 more answers

Can you answer these for me ?

vodka [1.7K]

Answer:

B. 4 3/8

Step-by-step explanation:

7/8 X 5 = 4 3/8

6 0

2 years ago