1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
GREYUIT [131]
2 years ago
5

Q..3/4 of a piece of metal has a mass on 15 kg. What is the mass of 2/5 of a piece of metal ?

Mathematics
1 answer:
Margarita [4]2 years ago
8 0

Answer

8kg

Explanation

3/4--------15

2/5-------x

cross multiplying

3/4×X = 2/5×15

3X/4 = 30/5

3X/4 = 6

cross multiplying

3X = 4×6

3X = 24

dividing bothsides by 3

3X /3 = 24/3

X = 8

therefore, the answer is 8 kg

You might be interested in
Tiana's math test score are 85 and 91 . She has one more test left. In order to earn and A, her average test score must be at le
Zanzabum
85 + 91 + x ÷3 ≥94


You didn't give any choices but this represents the problem.
3 0
3 years ago
You are a personnel director and are interested in predicting the Number of Shares of Company Stock (Y) using the Number of Year
hoa [83]

Answer:

intercept=b0=75

Step-by-step explanation:

The least squares estimate of the intercept b0 can be computed as

b0=ybar-b1*xbar.

ybar=average number of shares of company stock=525.

xbar= average number of years employed=22.5.

slope=b1=20.

Thus,

intercept=b0=ybar-b1*xbar

intercept=b0=525-20*22.5

intercept=b0=525-450

intercept=b0=75.

Thus, the estimate of intercept b0=75.

8 0
3 years ago
If the area of a trapezoid is 28 m with a height of 14 m in with one of the base being 1 m to find the length of the second face
In-s [12.5K]
The area of a trapezoid is basically the average width times the altitude, or as a formula:
Area = h ·

b 1 + b 2
2


where
b1, b2 are the lengths of each base
h is the altitude (height)
Recall that the bases are the two parallel sides of the trapezoid. The altitude (or height) of a trapezoid is the perpendicular distance between the two bases.

In the applet above, click on "freeze dimensions". As you drag any vertex, you will see that the trapezoid redraws itself keeping the height and bases constant. Notice how the area does not change in the displayed formula. The area depends only on the height and base lengths, so as you can see, there are many trapezoids with a given set of dimensions which all have the same area.
4 0
3 years ago
Evaluate the expression when c=3 and d=9.(45/d)- c
sashaice [31]

Expression given:

\frac{45}{d}-c

<em>Procedure</em>

As the problem is saying that <em>c = 3 </em>and <em>d = 9</em><em>,</em> we have to replace the values in the given expression:

=\frac{45}{9}-3=5-3

Answer:

=2

7 0
1 year ago
Read 2 more answers
For which equation would x = 8 not be a solution?
neonofarm [45]
8x = 64
x = 8

4x = 48 
x = 12

10x = 80 
x = 8 

9x = 72
x = 8

So <span>4x = 48 is the only equation that is not satisfied the condition.</span>
3 0
3 years ago
Other questions:
  • There are 20 entries in the chess tournament. How many ways can they finish in first, second,
    14·1 answer
  • Calculate annually compounded interest
    10·1 answer
  • What are 3 statements about 3/4
    13·2 answers
  • Which of the following solves the proportion 3/8 = x/24?
    6·2 answers
  • Point AAA is at {(-7,5)}(−7,5)left parenthesis, minus, 7, comma, 5, right parenthesis and point CCC is at {(5,-1)}(5,−1)left par
    5·1 answer
  • petrol and engine oil has to mix in the ratio 5 : 2 for a certain motorcycle how much engine oil is needed to mix with 10 litres
    12·1 answer
  • Reasoning : Why is the numerator greater than
    9·1 answer
  • . In a group of 37 people waiting in line at the local java house, 18 wanted to order a cappuccino, 20 wanted to
    15·1 answer
  • Help please idk how to do math
    10·2 answers
  • A timer is started and a few moments later a swimmer dives into the water and then comes back up. The swimmer’s depth (in feet)
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!