All categories

4 years ago

Need help... Solve this Word Problem

Mathematics

1 answer:

polet [3.4K]4 years ago

8 0

y+z=10

x+z=8

x+y=12

(y+z)-(x+z)=10-8

y-x=2

y+x=12

solve simultaneously

x=5, y=7

then substitute to get z=3

hence xyz=573

You might be interested in

What is the LCM of 18 and 24

Musya8 [376]

The least common multiplier of 18 and 24 is 72. Because all of 18's multipliers do not match up with 24's multipliers until 72, it is the LCM

6 0

3 years ago

Read 2 more answers

In this scatterplot the individuals are states. The variable "cig" is the number of cigarettes sold per person in the state in 1

Ipatiy [6.2K]

Answer:

e= -5.41

Step-by-step explanation:

Hello!

In linear regression, a residual value is a distance between the observed values and the regression line.

The residual value (e) is calculated as the difference between the observed value (Y) and the predicted value (^Y).

e= Y - ^Y

e= 15.92 - 21.33 = -5.41

I hope it helps!

5 0

4 years ago

Can someone help me on letters B and C?

skelet666 [1.2K]

Step-by-step explanation:

if he is just talking about the length than it is,

4(13x + 8)

of he is talking about overall length he swam than,

4(13x + 8) + 3(7x - 2)

if x = 12

than

perimeter = 2l + 2b

so, after inserting the values we got,

→ 2[13(12) + 8] + 2[7(12) - 2]

→ 2 (156 + 8) + 2(84 - 2)

→ 2 × 164 + 2 × 82

→ 328 + 164

→ 492 ft. ← perimeter

and yeah, according to me

a is wrong as,

formula of perimeter = 2l + 2b or 2(l+b)

so, the answer should be,

2(13x + 8) + 2(7x - 2) or 2 [ (13x + 8) + (7x - 2)

hope this answer helps you dear...take care and may u have a great day ahead!

4 0

2 years ago

If the sin 90° is 1, then the cos ____ °= _____.

borishaifa [10]

Maybe:
Cos90=0
I’m not sure of the question here

5 0

3 years ago

Read 2 more answers

Is it scalene isosceles or equilateral then write acute obtuse or right thx

almond37 [142]

It's scalene because it has different sides and obtuse because root 40²+30²=50
110>50

4 0

3 years ago