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Aleonysh [2.5K]
2 years ago
7

Which expression is equivalent to 45 + 30

Mathematics
1 answer:
OLga [1]2 years ago
8 0

Answer:

5(9+6)

5×9=45

5×6=30

I hope this is good enough:

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Lori is three times as old as Michelle. In five years Michelle's age will be one half of Lori's age. How old are Lori and Michel
AURORKA [14]

Answer:

Lori's age is 15 years old and Michelle's age is 5 years old now

Step-by-step explanation:

Let

x-----> Lori's age

y ----> Michelle's age

we know that

x=3y-----> equation A

(y+5)=\frac{1}{2}(x+5) ----> equation B

substitute equation A in equation B and solve for y

(y+5)=\frac{1}{2}(3y+5)

2y+10=(3y+5)

3y-2y=10-5

y=5

Find the value of x

x=3(5)=15

therefore

Lori's age is 15 years old and Michelle's age is 5 years old now

7 0
3 years ago
A box contains 8 $1’s 14 $5’s 9 $10’s 15 $20’s 2 $50’s and 7 $100’s
Serjik [45]
The total money is $2,178
5 0
3 years ago
Two angles are supplementary. The measure
BlackZzzverrR [31]

Answer:

57°

Step-by-step explanation:

Let's assume the measurement of the second angle is x.

so, following the problem

(2x + 9) + x = 180

2x + x = 3x

=> 3x + 9 = 180

=> 3x = 180 - 9

3x = 171

x = 171/3

x = 57°

57° is the smallest angle

5 0
2 years ago
According to the text, the specific things that people want in life are called
Oksi-84 [34.3K]

Answer:

your going to have to be a little more specific than that please ;-; but if you want i can answer it this way

Reach a fabled level of success that makes you untouchable.

Create a positive work/life balance.

Feel as capable as others think you are.

Be more productive with each minute of the day.

Be recognized as talented or even brilliant.

4 0
3 years ago
Can someone explain how these equal 5 and -5 please
uysha [10]
I'm not sure how you obtained -5 as your answer but this is the mathematical explanation. hope this helps!
{x}^{2}  + 3x = 40 \\  {x}^{2}  + 3x - 40 = 0 \\(x + 8)(x - 5) = 0 \\ x =  - 8 \\ x = 5
6 0
3 years ago
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