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xxMikexx [17]
3 years ago
14

Is 17 heartbeats in 15 seconds a unit rate? Why or why not?

Mathematics
1 answer:
g100num [7]3 years ago
8 0
No, because it is not per second. You would have to simplify to per one second for it to be a unit rate. Hope it helps! :)
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What is the area of triangle ABC ? round to the nearest square unit ?
mash [69]

Answer: 33 square units

Step-by-step explanation:

Given: Sides lengths of the triangle : 16 units, 10 units, 8 units.

Heron's formula:-

\text{Area of triangle}=\sqrt{s(s-a)(s-b)(s-c)}, where s is the semiperter and a,b and c are the side-lengths of the triangle.

Let a=16 , b=10 and c=8

Then,

s=\dfrac{a+b+c}{2}=\dfrac{16+10+8}{2}=17

Using Heron's formula:-

\text{Area of triangle}=\sqrt{17(17-16)(17-10)(17-8)}\\\\\Rightarrow\ \text{Area of triangle}=\sqrt{1071}=32.7261363439\approx33\text{ square units}

5 0
3 years ago
I need help with 7, 10, and 13
Alexus [3.1K]
(2000 - 150) / 67
27

(3000 - 400) /6
434

(20 - 7) / .75
17
6 0
3 years ago
The cost of eight stress balls and five T-shirts is $111.75. The cost of twelve stress balls and four T-shirts is $102.00. What
aksik [14]
Let's say stress ball cost x and t shirt cost y
8x+5y=111.75
12x+4y=102.00→3x+y=25.5→y=25.5-3x

8x+5(25.5-3x)= 111.75
8x+127.5-15x=111.75
-7x=-15.75
x=2.25

12x+4y=102
12(2.25)+4y=102
27+4y=102
4y=75
y=18.75

d is the correct answer
6 0
3 years ago
Stephen factored x2−10x 21 and found the answer to be (x 7)(x 3). Is he correct? Question 4 options: yes no.
STALIN [3.7K]

The true statement is that Stephen's factored expression is incorrect.

Given

The expression is given as:

\rm x^2-10x+21

<h3>What is factorization?</h3>

Factorization involves splitting a function into factors.

Start by expanding the equation

\rm x^2-10x+21=0\\\\x^2-7x-3x+21=0

Factorize the equation

\rm x^2-7x-3x+21=0\\\\x(x-7)-3(x-7)=0

Factor out x - 7

\rm x(x-7)-3(x-7)=0\\\\(x-7)(x-3)=0

Hence, the true statement is that Stephen's factored expression is incorrect.

Read more about factored expressions at:

brainly.com/question/11579257

7 0
2 years ago
Is -8y^2 divisible by 4xy
amm1812

Answer:

No

Step-by-step explanation:

No since they dont share x

6 0
3 years ago
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