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3 years ago

I just need these three questions fine, they should be easy, 7th grade level

Mathematics

1 answer:

muminat3 years ago

7 0

1) A graph is linear when the line on a graph is a straight line with no curves.

2) A proportional graph means that as x increases, y increases and when x decreases, y decreases and their ratio always stays the same.

3) (I don't know what type of equation you mean but this is my guess)

Division is the last step of an equation.

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Yesterday, the price of a can of beans at five supermarkets was $2.12, $2.21, $2.09, $2.42, and $2.36, respectively, but today e

TEA [102]

Your answer is 2.22, 2.22, 2.19, 2.52, 2.46

4 0

3 years ago

Read 2 more answers

n music, a quaver is one-eighth of a semibreve (whole note). What fraction of a semibreve is a hemidemisemiquaver? (Hint: hemi-,

Dmitry [639]

Answer:

$\dfrac{1}{64}$

Step-by-step explanation:

Hemi-, demi- and semi- are prefixes which mean <u>half</u>.

When applied to musical notation, each time a prefix is added it means the note's value is <u>halved</u>.

Therefore, if a quaver is one-eighth of a semibreve, then a <u>semiquaver</u> is half of a quaver, which means it's <u>one-sixteenth of a semibreve</u>.

$\large \begin{aligned}\sf quaver & = \sf\dfrac{1}{8}\:of\:a\:semibreve\\\\\implies \sf hemisemidemiquaver & = \sf \dfrac{1}{2} \times \dfrac{1}{2} \times \dfrac{1}{2} \times quaver\\\\& = \sf \dfrac{1}{2} \times \dfrac{1}{2} \times \dfrac{1}{2} \times \dfrac{1}{8}\\\\& = \sf \dfrac{1}{64}\:of\:a\:semibreve\end{aligned}$

Therefore, a hemisemidemiquaver is one-sixty-fourth of a semibreve.

5 0

2 years ago

Pls answer before 8:00 pm

Semenov [28]

Answer:225 jeans.

Step-by-step explanation: What we need to do here is convert the number of jeans to a percentage. There were 25 jeans when 50 customers were surveyed and 25 is half of 50 or 50%. This means that if 450 pairs of pants are ordered half of them should be jeans. 450/2 = 225.

8 0

2 years ago

A plane flying at a certain altitude is observed from two points that are 2.2 meters apart. The angles of elevation made by the

lana [24]

$tan(72)= \frac{y}{x} ; tan(55)= \frac{y}{2.2 + x}$
$y=xtan(72);y=(2.2+x)tan(55)$
So we are to merge the two equations into one, since both of the equations are equal to y. a = b, b = c therefore, a = c.
$xtan(72)=2.2tan(55)+xtan(55)$
We are to isolate x.
$x[tan(72)-tan(55)]=2.2tan(55)$
$x=\frac{2.2tan(55)}{tan(72)-tan(55)}$
The value of x is approximately, 1.9047m
Then, substitute the value of x from $y=xtan(72)$
$y=1.9047tan(72)$
y = 5.862m
Round up, then the answer would be D.

7 0

3 years ago

Find sin j? Please I don’t understand

Nataliya [291]

<h3>Answer: C) 4/8 = 0.5</h3>

=========================================================

Explanation:

The sine ratio involves the opposite over hypotenuse.

With respect to reference angle J, the opposite leg is the one furthest from the angle. So the opposite side is KL = 4. The hypotenuse is always the longest side, always opposite the 90 degree angle, so LJ = 8 is the hypotenuse.

sin(angle) = opposite/hypotenuse

sin(J) = KL/LJ

sin(J) = 4/8

sin(J) = 0.5

3 0

3 years ago