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3 years ago

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Which expression forms an equation with the given expression? 24 – 5 • 2 = ___________ A. (5 + 3) • 2 B. 2(6 + 1) C. 5 • 8 – 2 D

. 4 • 9 + 2

2 answers:

julia-pushkina [17]3 years ago

6 0

24-5*2 = 24-10 = 14

so from these given choices just choice B. has the result of 14 because
2(6+1) = 2*7 = 14

hope this will help you

zhenek [66]3 years ago

5 0

D. the rest is because of the characters rule

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Can anybody plz help me on C and D and it's due tm someone plz help

Airida [17]

0.3% = 0.003..." of " means multiply
0.003(200) = 0.6 <==

0.85% = 0.0085
0.0085(600) = 5.1 <==

what u can do to turn the percents to decimals is divide by 100.
0.3 / 100 = 0.003 and 0.85 / 100 = 0.0085
or u can move the decimal two spaces to the left

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3 years ago

What is 60/ 480 ? without calculator

romanna [79]

Answer:

1/8

Step-by-step explanation:

You must divide by common multipliers. so you can first divide the numerator and denominator by 10, which would make it 6/48, and then do that again with 6. Which then would give you the answer of 1/8.

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3 years ago

Identify the surface with the given vector equation. r(s, t) = s sin 4t, s2, s cos 4t

k0ka [10]

Answer:

Circular paraboloid

Step-by-step explanation:

Given ,

$r(s,t)=ssin4t,s^2,scos4t$

Here, these are the respective $x,y,z$ axes components.

<em>Component along x axis $r_i : ssin4t$ </em>

<em>Component along y axis $r_j : s^2$ </em>

<em>Component along z axis $r_k : scos4t$ </em>

We see that , from the parameterised equation , $r_i^2+r_k^2=s^2sin^24t+s^2cos^24t\\r_i^2+r_k^2=s^2\\r_i^2+r_k^2=r_j$

This can also be written as :

$x^2+z^2=y$

This is similar to an equation of a parabola in 1 Dimension.

By fixing the value of z=0,

<u><em>We get $y=x^2$ which is equation of a parabola curving towards the positive infinity of y-axis and in the x-y plane.</em></u>

By fixing the value of x=0,

<u><em>We get $y=z^2$ which is equation of a parabola curving towards positive infinity of y-axis and in the y-z plane. </em></u>

Thus by fixing the values of x and z alternatively , we get a <u>CIRCULAR PARABOLOID. </u>

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3 years ago

An electronic store orders 5 sets of walkie-talkies for $74.25 each. The store sells each set for $19.90. What is the percent ma

Ilya [14]

Answer:

34% per set

Step-by-step explanation:

4 0

3 years ago

Read 2 more answers

your friend claims that two isosceles triangles ABC and DEF are congruent if two corresponding sides are congruent. he explains

Svetach [21]

Think about the fact that you can have two types of isosceles triangle: one of them that is a right triangle (isosceles right triangle) such as a 45-45-90 triangle and the other type can be just a regular triangle that has two sides that are congruent but it isn't a right triangle.

Thus, you would need more info about the triangles in order to conclude that the two isosceles triangles are congruent to each other.

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3 years ago