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3 years ago

PLEASE HELP ME. ANSWER THIS FAST 20 POINTS FOR IT!

Mathematics

1 answer:

9966 [12]3 years ago

5 0

Answer:

(<) this means less than

(>) this means greater than

So since the question doesn't say anything about -4°C we can automatically cross out A and B

They are both negative! but when you have a negative. Its going to be less than a positive

So this means 4°C is greater than -5°C

or in other words

D.) 4°C > -5°C

hope this helps!

and don't forget 2

MARK ME BRAINIEST!

Step-by-step explanation:

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Marjorie and Blaine make chairs together. Marjorie builds the seat and Blaine independently sews the cushions to rest on top of

Andrew [12]

Making 10 chairs would take Marjorie and Blaine<u> </u><u>21 hours and 40 minutes</u>.

<h3>How long does it take to make 10 chairs?</h3>

The total time it takes Marjorie and Blaine to perform their respective tasks in building a chair is multiplied by 10 chairs, respectively. This time is known as their speed.

The resulting figures are summed to get the total time.

<h3>Data and Calculations:</h3>

The total time it takes Marjorie to build a chair is 15 hours (1.5 hours x 10)

The total time it takes Baline to sew cushions per chair is 400 minutes (40 x 10) or 6 hours and 40 minutes.

Therefore, the total time to build 10 chairs is 21 hours, 40 minutes (15 hours + 6 hours and 40 minutes).

Thus, making 10 chairs would take Marjorie and Blaine <u>21 hours and 40 minutes</u>.

Learn more about the time consumed at brainly.com/question/17146782

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2 years ago

[Systems of equations] (/20) 1. Suppose the coefficient matrix of a system of linear equations has a pivot position in every row

Marina86 [1]

Answer:

The system is consistent because the rightmost column of the augmented matrix is not a pivot column.

Step-by-step explanation:

It is given that the coefficient of the matrix of a linear equation has a pivot position in every row.

It is provided by the Existence and Uniqueness theorem that linear system is said to be consistent when only the column in the rightmost of the matrix which is augmented is not a pivot column.

When the linear system is considered consistent, then every solution set consists of either unique solution where there will be no any variables which are free or infinitely many solutions, when there is at least one free variable. This explains why the system is consistent.

For any m x n augmented matrix of any system, if its co-efficient matrix has a pivot position in every row, then there will never be a row of the form [0 .... 0 b].

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3 years ago

Ricardo is buying juice boxes for snack packs. Which is the best buy?

patriot [66]

Ummm I don’t find a way to give this a response, but the Best Buy it would be snack packs because he’s getting a finance

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3 years ago

Estimate a 15% tip on a dinner bill of 71.85

Step2247 [10]

15% = 0.15
15% of 71.85 is equal 0.15*71.85 ≈ 10.78

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3 years ago

Angelique draws triangle GHK. If A.1.2 or 5.7<br> B.2.2 or 4.7<br> C.4.7<br> D.5.7

makvit [3.9K]

The correct question in the attached figure

we know that

applying the law of sines
g/sinG=k/sinK

g=3 units
G=30°
k=4 units
K=?
so
g/sinG=k/sinK------> g*sinK=k*sinG-----> sinK=k*sinG/g
sinK=4*sin 30°/3-----> 2/3
K=arc sin(2/3)-------> K=41.81°

case 1)
for angle K=41.81°
the sum of the angles (H +G+K)=180°
H=180-(G+K)------> 180-(30+41.81)--------> H=108.19°

h/sinH=g/sinG-------> h=g*sinH/sinG------> h=3*sin 108.19°/sin 30°
h=5.70 units

case 2)
for angle K=180°-41.81°---------> K=138.19°
the sum of the angles (H +G+K)=180°
H=180-(G+K)------> 180-(30+138.19)--------> H=11.81°

h/sinH=g/sinG-------> h=g*sinH/sinG------> h=3*sin 11.81°/sin 30°
h=1.2 units

therefore

the answer is the option
<span>A. 1.2 or 5.7</span>

7 0

3 years ago

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