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2 years ago

6

Why do you add a zero when multiplying two digits by two digits

1 answer:

malfutka [58]2 years ago

6 0

When you add a zero to the problem, it shows you are now multiplying in the double-digits. Let's say you are multiplying 12x12. First you cover up the one then multiply them. Then cover up the two and you have 10. When you multiply them, it ends in a zero. Don't think of it as adding a zero but adding to products.

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Find the volume of both shapes please answer will give brainiest Also please answer neatly.

SSSSS [86.1K]

Answer:

2). Volume = 14400 feet³

3). Volume = 157.5 ft³

Step-by-step explanation:

Both the figures given in the sheet attached are a rectangular pyramid and a triangular prism.

2). In this part of the question solid given is in the shape of an rectangular pyramid.

Volume of this oblique pyramid = $\frac{1}{3}(\text{Base})(\text{Height})$

Here 'B' = area of the base

h = height of the pyramid

Volume = $\frac{1}{3}(25\times 36)\times 48$

= 14400 cubic feet

4). Volume of a triangular cone = (Area of the triangular base)×(height)

= $[\frac{1}{2}(\text{Base})(\text{height})]\times {\text{height of the prism}}$

= $\frac{1}{2}(7\times 9)\times {5}$

= 157.5 ft³

6 0

3 years ago

Please answer this question now

xz_007 [3.2K]

Answer:

397.7 m²

Step-by-step Explanation:

Step 1: find m < W

W = 180 - (33+113) (sum of ∆)

W = 34°

Step 2: find side UV using the law of sines

$\frac{UV}{sin(W)} = \frac{VW}{sin(U)}$

$\frac{UV}{sin(34)} = \frac{29}{sin(33)}$

Multiply both sides by sin(34)

$\frac{UV}{sin(34)}*sin(34) = \frac{29}{sin(33)}*sin(34)$

$UV = \frac{29*sin(34)}{sin(33)}$

$UV = 29.8 m$ (approximated)

Step 3: find the area using the formula, ½*UV*VW*sin(V)

area = ½*29.8*29*sin(113)

Area = 397.7 m² (rounded to the nearest tenth.

7 0

3 years ago

HELP PLEASE 18 POINTS

ICE Princess25 [194]

Answer:

Step-by-step explanation:

line 1 m=y2-y1 / x2-x1 [formula for slope ]

m= 0 - (-3) / 8-(-4)

m= 3 /12

m= 1/4 slope of line 1

line2

m = 2-6 / 0-(-1)

m = -4 / 1

m = -4 slope of line 2

line 3

m = -4 - (-7) / -3 - 6

m = 3 / -9

m = - 1/3 slope of line 3

lines 1 & 2 perpendicular b/c they are reciprocals with a sign change :)

lines 1 & 3 neither.. differet slopes and not reciprocals

lines 2 & 3 perpendicular b/c they are reciprocals with a sign change :)

6 0

2 years ago

Evaluate:<br> g(x) = 3•2^x+2 + 3<br> g(3)

sertanlavr [38]

If the 3 is supposed to be replaced by any x's, then the answer would be 29 I believe.

4 0

3 years ago

water stations will be placed every 600 meters of a fifteen kilometer race. how many water stations will be needed?

Snezhnost [94]

1km=1000metres
15km=15000 metres
15000/600=25
25-1=24 (minus the last one)

hope this helps :)

5 0

2 years ago

Read 2 more answers