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bazaltina [42]
2 years ago
6

Help me please, evaluate the expressions below if (a=8), (b=-2) and (c=-9).

Mathematics
2 answers:
Naddika [18.5K]2 years ago
8 0

Answer:

<em>100 </em>

Step-by-step explanation:

Evaluate the expressions | - a² - 2bc | if a = 8, b = - 2 and c = - 9.

| - 8² - 2( - 2 )( - 9 ) | = | - 64 - 36 | = | - 100 | = <em>100</em>

maxonik [38]2 years ago
5 0

-(8^2) - 2(2)(9)=

-64-36

Final answer: -100

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You and your friend go bowling your score is 6 more that twice your friends score if your score is 212 what is your friends scor
kotegsom [21]

Answer:

103

Step-by-step explanation:

your friend's score=x

twice your friend's score=2*x

then your score=6+2*x

Given that your score is=212

In other words, 6+2*x=212

2*x=212-6

2*x=206

x=206/3

x=103

8 0
2 years ago
The Barnes family has a coupon for 10% off their dinner. If their bill comes to $82.50 and they wish to tip 15%, what will they
satela [25.4K]

Answer:

Total cost= $86.25

Step-by-step explanation:

Giving the following information:

Discount= 10%

Nill= $82.5

Tip= 15%

<u>First, we need to calculate the discounted price:</u>

Discount price= 82.5 / 1.1= $75

<u>Now, the tip:</u>

Tip= 75*0.15= $11.25

<u>Finally, the total cost:</u>

Total cost= 75 + 11.25

Total cost= $86.25

3 0
3 years ago
What is the probability that a point chosen at random in the given figure will be inside the larger square and outside the small
liraira [26]

Answer:

  • 51/100

Step-by-step explanation:

<em>The probability that a point chosen at random in the given figure will be inside the larger square and outside the smaller square</em> is equal to the ratio of the area of interest to the total area:

<em>P(inside larger square and outside smaller square)</em> = area of interest / total area

<em>P(inside larger square and outside smaller square)</em> = area inside the larger square and outside the smaller square / area of the larger square

<u>Calculations:</u>

<u />

1. <u>Area inside the larger square</u>: side² = (10 cm)² = 100 cm²

2. <u>Area inside the smaller square </u>= side² = (7cm)² = 49 cm²

3. <u>Area inside the larger square and outside the smaller square</u>

  • 100 cm² - 49 cm² = 51 cm²

4.<u> P (inside larger square and outside smaller squere)</u>

  • 51 cm² / 100 cm² = 51/100
5 0
3 years ago
a school wants to make a new playground by cleaning up and abandoned lot that is shaped like a rectangle. they give the job of p
svetoff [14.1K]
 <span>3/8 is left is the correct answer if multiple choice

</span>
5 0
3 years ago
21 is what percent of 40
-Dominant- [34]
To solve for this, set up a proportion.
21/40 = x/100.
Cross multiply the fraction's numerators with the denominators; 
21 x 100, 40 and x.
2100/40x.
Divide both numbers by 40 to get x.
2100/40 = 52.5
21 is 52.5% of 40.
I hope this helps!
5 0
3 years ago
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