3 years ago

What is the value of x that makes the given expression true?

Mathematics

2 answers:

Yanka [14]3 years ago

5 0

x=-4
.......................

Paul [167]3 years ago

4 0

X = - 4

2(-4-8) = -4 + 5(-4)

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Are 30:12 and 40:16 equivelant if noy tell why

mihalych1998 [28]

They are equivalent

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3 years ago

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Anni [7]

Answer:

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3 years ago

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aleksandrvk [35]

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Step-by-step explanation:

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2 years ago

If the mean heights of three groups of students consisting of 20,16 and 14 students are 167m, 150m and 1.40m respectively find t

Aleonysh [2.5K]

Answer:

1.54 m

Step-by-step explanation:

Given information:

Three groups of students

20 students with a height of 1.67 m
16 students with a height of 1.50 m
14 students with a height of 1.40 m

⇒ Total number of students = 20 + 16 + 14 = 50

To find the mean height of all the students, divide the sum of all the students' heights by the total number of students:

$\begin{aligned}\implies \sf mean\:height & =\dfrac{(20 \times 1.67)+(16 \times 1.50)+(14 \times 1.40)}{50}\\\\ & = \dfrac{33.4+24+19.6}{50}\\\\ & = \dfrac{77}{50}\\\\ & = 1.54\:\: \sf m\end{aligned}$

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2 years ago

Read 2 more answers

Please Help!!!!! WIll mark Brainliest if correct!

SpyIntel [72]

The 3rd option is the answer

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2 years ago