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3 years ago

The diagram shows the net of a square pyramid.

Mathematics

1 answer:

fenix001 [56]3 years ago

4 0

Answer:

Given,

Base (b) = 16 cm

slant Height (h) = 15 cm

a= 8 cm {a is the half of base}

x = ?

Using Pythagoras Theorem

p^2 = h^2 - b^2

x^2= 15 - 8

x^2 = 7

x = 2.64 cm

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Deborah needs to make 16 costumes for the school play. Each costume requires 2 and 1/4 yards of material. How many yards of mate

patriot [66]

35.5 wouldn’t be enough. She needs 2 1/4 of yards of material, first you would need to convert the fraction into a decimal and 1/4 is .25 which gives you 2.25 now you multiply 16 x 2.25 which gives you 36. That’s why 35.5 wouldn’t be enough.

3 0

3 years ago

Susie has planned a trip to a city 60 miles away. She wishes to have an average speed of 60 miles/hour for the trip. Due to a tr

Nutka1998 [239]

Answer:

90 mi/h

Step-by-step explanation:

Given,

For first 30 miles, her speed is 30 miles per hour,

Let x be her speed in miles per hour for another 30 miles,

Since, here the distance are equal in each interval,

So, the average speed of the entire journey

$=\frac{\text{Average speed for first 30 miles + Average speed for another 30 miles}}{2}$

$=\frac{30+x}{2}$

According to the question,

$\frac{30+x}{2}=60$

$30+x=120$

$\implies x = 90$

Hence, she needs to go 90 miles per hour for remaining 30 miles.

7 0

3 years ago

Answer which ever for 13 points!

nata0808 [166]

I'm pretty sure 12 is C

8 0

4 years ago

Read 2 more answers

Are the triangles Similar? (yes or no). If yes, by what

kakasveta [241]

Answer:

The triangles are not similar

Step-by-step explanation:

we know that

If two triangles are similar, then the ratio of its corresponding sides is proportional and its corresponding angles are congruent

Triangle X.Y.Z

$\angle X=61^o$

$\angle Z=90^o$

$\angle Y=90^o-61^o=29^o$ ---> angle X and angle Y are complementary angles

Triangle H.G.J

$\angle H=90^o-34^o=56^o$ ---> angle H and angle J are complementary angles

$\angle G=90^o$

$\angle J=34^o$

X.Y.Z is a $61^o-90^o-39^o$ triangle

H.G.J is a $56^o-90^o-34^o$ triangle

The measure of its corresponding angles are not congruent

therefore

The triangles are not similar

8 0

3 years ago

5. How many solutions will the following system of equations have? y = -x +4 x² + y² = 16

alekssr [168]

Answer:

x = 0 and y = 4

x = 4 and y = 0

thus: 2 solutions

Step-by-step explanation:

8 0

3 years ago