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Colt1911 [192]
3 years ago
15

Pls help me in these questions

Mathematics
1 answer:
Maru [420]3 years ago
7 0

1.n>7

2. is 55

3. is 6

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Lynn can type 60 words per minute. If she types for 30 minutes, how many words does she type in all?
Crazy boy [7]

Answer:1800 words

Step-by-step explanation:

Multiply how many words per minute she types by how many minutes she types. In this case 60x30=?. The easy way to do this is drop the 2 zeros and do  6x3=18. In the original equation we dropped the 2 zeros. Now we add them back on the back of the 18 and get 1800.

7 0
3 years ago
write the equation of a line that is perpendicular to the given kine and that passes through the given point. -x+5y=14;(-5, -2)
Inga [223]
X + 5y = 14
5y = -x + 14
y = -1/5x + 14/5.....the slope here is -1/5. A perpendicular line will have a negative reciprocal slope. All that means is flip the slope and change the sign. So our perpendicular slope will be 5. See how I flipped -1/5 making it -5/1...and then changed the sign, making it 5.

y = mx + b
slope(m) = 5
(-5,-2)....x = -5 and y = -2
now we sub and find b, the y int
-2 = 5(-5) + b
-2 = -25 + b
-2 + 25 = b
23 = b

so ur perpendicular equation is : y = 5x + 23 <==

7 0
3 years ago
4x + 2y = 14 8x + y = 10<br><br> Simultaneous equations
k0ka [10]
4x + 2y = 14
8x + y = 10
7 - 2x = 10 - 8x
7 + 6x = 10
6x = 3
x = 1/2
y = 6
Hope this helps!
8 0
4 years ago
What is 4/5 divided by 10?<br> A)4/50 or 2/25<br> B)50/4 or 12 1/2<br> C)5/40 or 1/8
nlexa [21]
The answer is a since u do 4/5 put the whole number one then leave change flip then simplify
4 0
3 years ago
Read 2 more answers
What is the surface area
klasskru [66]
If  you notice the picture below

the hexagonal pyramid, is really just a hexagon at the bottom, 6 sides,
and 6 triangles stacked up to each other at the edges

so.. just get the area of the hexagon and the triangles, and add them up, that'd be the surface area of the pyramid

a triangle's area, you'd know is just 1/2 bh, and you have both of those there

now, for the hexagon, notice, we're given the length from the center to one of the sides, namely the "apothem"

thus   \bf \textit{area of a regular polygon}\\\\&#10;A=\cfrac{1}{2}\cdot  an\cdot  s\qquad &#10;\begin{cases}&#10;a=apothem\\&#10;n=\textit{number of sides}\\&#10;s=\textit{length of one side}\\&#10;----------\\&#10;n=6\\&#10;s=22\\&#10;a=11\sqrt{3}&#10;\end{cases}

7 0
4 years ago
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