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Paladinen [302]
3 years ago
11

Which situation involves a change modeled by a negative number but an end result modeled by a negative number?

Mathematics
2 answers:
Rom4ik [11]3 years ago
6 0

Answer:

April owes her brother $5. On Friday, she gets $10 for her allowance.

Step-by-step explanation:

valkas [14]3 years ago
5 0

Answer:

is there supposed to be a picture or something so ik what the choices are?

Step-by-step explanation:

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What is the measure of Angle y in this figure?
uranmaximum [27]

\qquad \qquad\huge \underline{\boxed{\sf Answer}}

Here, in the given figure. Angle y° forms vertical opposite angle pair with Angle 163°, therefore they have equal values.

that means ~

\qquad \sf  \dashrightarrow \: y \degree = 163 \degree

3 0
2 years ago
Need help !! 25 points ​
lyudmila [28]

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B

Step-by-step explanation:

6 0
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Alona [7]
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2 years ago
Find the value of x for the question shown above​
Sindrei [870]

hint; the sum of all angles in a triangle is 180° !

^so all together it’s gonna be 180 !

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8 0
2 years ago
A 25% acid solution must be added to a 40% solution to get 240 liters of 30% acid solution. How many of each should be used ?
schepotkina [342]

Answer:

The number of liters of 25% acid solution = x = 160 liters

The number of liters of 40% acid solution = y = 80 liters

Step-by-step explanation:

Let us represent:

The number of liters of 25% acid solution = x

The number of liters of 40% acid solution = y

Our system of Equations =

x + y = 240 liters....... Equation 1

x = 240 - y

A 25% acid solution must be added to a 40% solution to get 240 liters of 30% acid solution.

25% × x + 40% × y = 240 liters × 30%

0.25x+ 0.4y = 72...... Equation 2

We substitute 240 - y for x in Equation 2

0.25(240 - y)+ 0.4y = 72

60 - 0.25y + 0.4y = 72

Collect like terms

- 0.25y + 0.4y = 72 - 60

0.15y = 12

y = 12/0.15

y = 80 Liters

Solving for x

x = 240 - y

x = 240 liters - 80 Liters

x = 160 liters

Therefore,

The number of liters of 25% acid solution = x = 160 liters

The number of liters of 40% acid solution = y = 80 liters

5 0
2 years ago
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