3 years ago

CAN YALL PLEASE HELP ME

Mathematics

1 answer:

sveta [45]3 years ago

5 0

Answer: i think its 33%
explanation: the discount didnt go down far so the percentage isnt high

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Compute $\left(-3\sqrt{128}\right)\left(-4\sqrt{50}\right)$.

Wewaii [24]

Answer:

not 5

Step-by-step explanation:

4 0

3 years ago

The relationship between women’s whole-number shoe sizes and foot lengths is an arithmetic sequence, where an is the foot length

ad-work [718]

Answer:

The explicit formula for Arithmetic Sequence is $a_n=7.02+0.33n$

Step-by-step explanation:

Given: Foot length & shoe size in AP.

$a_n$ is foot length and n is shoe size.i.e., $a_{12}=11\:and\:a_7=9.33$

To find: Formula for Arithmetic sequence .i.e., $a_n$

From question,

$a_{12}-a_7=11-9.33=1.67$

Also, we know that

$a_{12}=a_7+5d\\5d=a_{12}-a_7\\5d=1.67\\d=\frac{1.67}{5}\\\\d=0.33$

Now, consider

$a_7=a_1+6d\\a_7=a+6d\\a=a_7-6d\\a=9.33-6\times0.33\\a=9.33-1.98\\a=7.35$

Thus using formula of $a_n$ we get,

$a_n=a+(n-1)d\\a_n=7.35+(n-1)\times0.33\\a_n=7.35+0.33n-0.33\\a_n=7.02+0.33n$

Therefore, The explicit formula for Arithmetic Sequence is $a_n=7.02+0.33n$

4 0

3 years ago

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Similar Triangles

Nimfa-mama [501]

Answer:

B. 4/8 = 5/10 = 1/2

Step-by-step explanation:

I calculated it logically

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3 years ago

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How do I solve this problem? Do I just write Non-Linear? (This is Linear Functions)

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Just right non linear

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3 years ago

The surface area of this triangular pyramid, whose base and lateral faces are congruent equilateral triangles, is __ square inch

DedPeter [7]

Answer:

The surface area is equal to $390\ in^{2}$

Step-by-step explanation:

The surface area of the triangular pyramid is equal to the area of its four triangular faces

In this problem

$SA=4[\frac{1}{2}(b)(h)]$

we have

$b=15\ in$

$h=13\ in$

substitute the values

$SA=4[\frac{1}{2}(15)(13)]=390\ in^{2}$

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3 years ago

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