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sp2606 [1]
3 years ago
5

Ingrid gets two - thirds of her essay typed in 30 minutes. The equation 2/3×=30 can be used to find out how long it will take he

r to type her essay. Solve the equation to find the total number of minutes it takes for Ingrid to write the essay. Use numbers and words to explain how to solve 2/3×=30
Mathematics
1 answer:
emmainna [20.7K]3 years ago
3 0

Answer:

The answer is 45

Step-by-step explanation:

The equation is a straightforward one, we have:

2/3x = 30

because we have a fraction on at least one side, we will cross multiply thus:

2x = 30 x 3

2x = 90

Next, we divide both sides by 2 to make x the subject of the formula, we have 2x/2 = 90/2

x = 45

Therefore, it takes Ingrid 45 minutes to complete her essay

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A store has clearance items that have been marked down by 60%. They are having a sale, advertising an additional 15% off clearan
astra-53 [7]

Answer: 34%

Step-by-step explanation:

Given

Price is marked down by 60% with an additional discount of 15% on the marked down price

Suppose x is the original price of the item

After marking down, it is

\Rightarrow x-x\times 0.6=0.4x

after additional discount it is

\Rightarrow 0.4x(1-0.15)=0.4x\times 0.85=0.34x

Effective discount on the item is

\Rightarrow \dfrac{x-0.34x}{x}\times 100=66\%

Thus, a person is paying 100-66=34\% of the original price

6 0
3 years ago
Someone please helppppI'm stuck on this question
oksian1 [2.3K]
I wish i could but i cant see it
8 0
3 years ago
Please help i need to finish this test in lest than an hour
In-s [12.5K]

Answer:

−

k

2

2

+

3

k

3

4

Step-by-step explanation:

5 0
3 years ago
What will be angle COD If: angle COD minus angle KOD equals 61degrees and angle COD minus angle KOC equals 53degrees?
kenny6666 [7]

Use algebra for such problems
let, Angle COD = x
Angle KOD = y
Angle KPC = z
Given ,. x - y = 61° ( Equation 1 )
x - z = 53° ( Equation 2 )
Subtract 1st equation from 2nd and you'll get :

z - y = 8° ( Equation 3 )
Now since , x + y + z = 180° ( Equation 4 )
Add Equation 3 to Equation 4 and you'll get
x + 2z = 188° ( Equation 5)
From Equation 2 we know that , x -z = 53°
or, x = 53° + z ( Equation 6 )
Put this value of 'x' in Equation 5 and solve for z. you'll get :
(53° + z) + 2z = 188°
or
3z = 188 - 53 = 135°
solving for z we get
z = 45°
put this value of z in Equation 5
x + ( 2 x 45° ) = 188°
or
x = 188° - 90° = 98°
hence , Angle COD = 98°














5 0
3 years ago
Find the missing digit for the following bank identification numbers:
Softa [21]

Answer:

71100139<u>2</u>

321000<u>7</u>59

Step-by-step explanation:

hope it helps ^o^

6 0
2 years ago
Read 2 more answers
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