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Vikentia [17]
4 years ago
14

Find the product by using suitable properties 15 x (-25) x (-4) x (-10)

Mathematics
1 answer:
Colt1911 [192]4 years ago
7 0

Answer:

−15000

Step-by-step explanation:

Solution:

15×(-25) = -375

(-4)×(-10)= -40

-375×-40= -15000

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The heat loss h (in watts) through a single-pane glass window varies jointly with the window's area A (in square meters) and the
sleet_krkn [62]

Answer: 285 watts

Step-by-step explanation:

The heat loss h (in watts) through a single-pane glass window varies jointly with the window's area A (in square meters) and the difference between the inside and outside temperatures d (in kelvins). The equation relating h, A, d, and a constant k would be

h = kAd

If a single-pane of glass with an area of 1.00 square meter and a temperature difference of 1.00 kelvin has a heat loss of 5.70 watts, it means that

5.7 = k × 1 ×1

k = 5.7/1 = 5.7

The equation becomes

h = 5.7Ad

Therefore, the heat loss through a single-pane window with an area of 2.50 square meters and a temperature difference of 20 kelvins would be

h = 5.7 × 2.5 × 20

h = 285 watts

7 0
3 years ago
If y varies directly as x and z, and y=8/3 when x=1 and z=4, find y when x=6 and z=3
Butoxors [25]

8/3 =k(1)(4)

8/3 =4k

k=(8/3)/4

k =2/3


y= 2/3 *(6)(3)

y = 2/3 x 18

y = 12


7 0
3 years ago
If the digits of a three-digit number are reversed in order, then the sum of the new resulting number and the original number co
Makovka662 [10]
First we have to setup system of equations for the given case.
Let x is the original number and y is the reverse three digit number.
Then,
x+y=665  Equation 1
x-y=297 Equation 2
Add both equations to get.
2x=962
Divide both sides by 2.
x=481
This is the original number. And reverse number is : 481+y=962
y=184

Here Hundredth digit is 4, and tenth digit is 8 which is 2 times of the hundredth digit. 

Answer: Number is 481

6 0
3 years ago
A student is instructed to square a binomial and gets the results show
otez555 [7]

The correct option about squaring the binomial is that B. The student is wrong. There is a missing term.

<h3>How to use binomial theorem?</h3>

We want to square a binomial and using pascal's triangle in binomial theorem, we know that; (x + a)² will follow the pattern;

1x²a⁰ + 2a¹x¹ + 1x⁰a²

Thus, we can say that the expression (x + 3)² will give us;

x² + 2(3x) + 9a²

= x² + 6x + a²

Thus, we can say that the correct option about squaring the binomial is that B. The student is wrong. There is a missing term.

Complete Question is;

A student is instructed to square a binomial, and gets the result shown. Choose the correct description of the student's work.  (x + 3)² = x² + 9 Choose the correct answer below.

A. The student is wrong. You cannot square a binomial, only monomials.

B. The student is wrong. There is a missing term.

C. The student is correct. Each given term is squared.

D. The student is wrong. The student should add the threes instead of multiplying them.

Read more about binomial Theorem at; brainly.com/question/13602562

#SPJ1

7 0
2 years ago
Round 845000 to the nearest thousand
tiny-mole [99]
It is already rounded to the nearest thousand.

*Hope that helps :) Enjoy Brainly :)
4 0
4 years ago
Read 2 more answers
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