Mathematics, 30.07.2019 20:00 xuzixin2004

What is the value of the expression shown below? 7 + (10 − 4)2 ÷ 4 × 1 over 2 to the power of 3 a. 8 b. 8 and 1 over 6 c. 8 and 1 over 8 d. 79

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Answer from: astra

C. 8 and 1 over 8

Explanation:
7 + $\frac{(10-4)^2}{4} 
$ * $(\frac{1}{2} )^3$

= 7 + $\frac{(6)^2}{4}$ * $( \frac{1}{2} )^3$

= 7 + $\frac{36}{4}$ * $\frac{1}{8}$

= 7 + 9 * $\frac{1}{8}$

= 7 + $\frac{9}{8}$

= 8.125

= 8 $\frac{1}{8}$

Hope this helps :)

Answer from: Quest

Answer: question no. 1 -a. yes, the sides are in the ratio 2 : 5.question no. 2 -b. 59°question no. 3 -c. angles x and y are remote interior angles.question no. 4 -d. 90°, 45° and 45°question no. 5 -b. mn and qrstep-by-step explanation: question no. 1 -rs : xu = 3 : 7.5 = 2 : 5rt : x? = 6.4 : 16 = 2 : 5st : u? = 6 : 15 = 2 : 5as the ratios of all sides are equivalent, the triangles must be congruent and the sides must be proportional.therefore, the answer is: a. yes, the sides are in the ratio 2 : 5.question no. 2 -in the second diagram, angle b is the only letter not shown. therefore, the number must be equivalent to angle b.if we substitute the value of angle b as being 22° in the first diagram, we can now use the angle sum of a triangle to obtain the value of angle a.angle sum of a triangle = 180°therefore: let angle a = aa + 99 + 22 = 180a = 180 - 99 - 22a = 59°therefore, the answer is: b. 59°question no. 3 -angles x and y don't share the vertex of the triangle with the exterior angle w. remote interior angles don't share a vertex of a triangle with an exterior angle. this means that angles x and y are remote interior angles.therefore, the answer is: c. angles x and y are remote interior angles.question no. 4 -the sum of all interior angles of a triangle must be equivalent to 180°.90°, 45° and 45° are the only set of angle measures that are equivalent to 180°.therefore, the answer is: d. 90°, 45° and 45°question no. 5 -the only pair of sides stated in the options which are corresponding are mn and qr.therefore, the answer is: b. mn and qr.

Answer from: Quest

A= the square root of 3“if letters are anything like people, they’re all equal and deserve to be treated equally.”

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