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Anon25 [30]
4 years ago
5

Simipified the exprestion -1.7+(-6.3).On the test when maureen simipified the exression she got -4.6. What mistake did maureen l

ikley make when she simipified the question
Mathematics
1 answer:
Rasek [7]4 years ago
4 0

Answer:

Maureen ignored the negative(minus) sign in 1.7 thereby turning it into positive 1.7

Step-by-step explanation:

-1.7 + (-6.3)

Correct simplification

-1.7 + (-6.3)

Open parenthesis

= - 1.7 - 6.3

= -8

NOTE:

- * + = -

- * - = +

+ * - = -

+ * + = +

Maureen's simplification

-1.7 + (-6.3)

= 1.7 - 6.3

= -4.6

Maureen ignored the negative(minus) sign in 1.7 thereby turning it into positive 1.7

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Find product simplified form: (x√y + z) (x√y - z)
Svetach [21]

Answer:

x^{2}y-z^{2}

Step-by-step explanation:

Apply (a+b)(a-b) = a^{2} -b^{2} where x\sqrt{y} is a and z is b.

(x\sqrt{y} )^{2}-z^{2}

(x\sqrt{y} )^{2}=x^{2}y

x^{2}y-z^{2}

Hope this helps! :]

8 0
4 years ago
Need help with this question​
patriot [66]

Answer:

n = 12.5t

Step-by-step explanation:

add up the calories burned in both days

275 + 450 = 725

add up the minutes running on both days

22 + 36 = 58

divide calories by minutes

725 calories/58 minutes = 12.5 calories/1 minute

So 12.5 multiplied by any number of minutes tells you how many calories you burned

The number of calories you burned is dependent on the number of minutes you ran.

8 0
3 years ago
Use the diagram and equations below to match the following angles with their correct measures. Given Z = 2b + 6 and Y = 3b - 1.
s344n2d4d5 [400]
The picture in the attached figure

we know that
∠Y+∠Z=90°
∠Z=2b+6    ∠Y=3b-1
so
(2b+6)+(3b-1)=90----> 5b+5=90----> 5b=85----> b=17°
∠Z=2b+6---- 2*17+6-----> ∠Z=40°
∠Y=3b-1---> ∠Y=3*17-1---> ∠Y=50°

angle Y and W are supplementary angles
so
∠Y+∠W=180---------> ∠W=180-∠Y------> ∠W=180-50----> ∠W=130°

angle X and Z are supplementary angles
so
∠X+∠Z=180---------> ∠X=180-∠Z-----> ∠X=180-40°----> ∠X=140°

the answers are
a) ∠Z=40°
b) ∠Y=50°
c) ∠W=130°
d) ∠X=140°

6 0
3 years ago
Read 2 more answers
I WILL MARK YOU BRAINLIST!!!!If the team's average time is less than one minute per leg, then the eighth graders earn 50 points.
Eddi Din [679]

Answer:

The 7th graders earn the 50 points.

Step-by-step explanation:

3.89 is in minutes I assume?

3.89 > 1

7th graders earn the 50 points.

5 0
3 years ago
Match each scenario with the type of correlation it shows.
Arisa [49]

Answer:

The number of items bought and the checking account balance - negative correlation

The height of a baseball player and the number of hits made- no correlation

The time spent practicing and the number of free throws made- positive correlation

Step-by-step explanation:

8 0
4 years ago
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