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3 years ago

Summer School 2020 Math 8 NWLSD

Mathematics

1 answer:

Ray Of Light [21]3 years ago

5 0

Answer:

8 granola bars in each box

Step-by-step explanation:

The equation is 4x+5x=72

4x and 5x are like terms, so combine those 9x=72

Use the division property of equality to solve for x, x=8

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I am a 2 dimensional shape that has four sides. I have two obtuse angles and two acute angles. I have two different sets of para

OLga [1]

Answer:

Quadrilateral

Step-by-step explanation:

8 0

3 years ago

Find the 52nd term of the following arithmetic sequence. 3, 9, 15, 21,

Alex Ar [27]

Answer:

309

Step-by-step explanation:

a = 3, d = 6, n 52

Nth term of an Arithmetic sequence is given as:

$t_n=a +(n-1)d \\ \therefore \: t_{52}=3 +(52-1) \times 6 \\ \therefore \: t_{52}=3 +51\times 6 \\ \therefore \: t_{52}=3 +306 \\ \huge \red{ \boxed{\therefore \: t_{52}=309 }}\\$

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3 years ago

If sin x=2/9,x, in quadrant i, then find(without findingx): sin(2x), cos(2x), tan(2x)

Sergio039 [100]

We have that
sin x=2/9

we know that
sin² x+cos² x=1---------> cos² x=1-sin² x-----> cos² x=1-(2/9)²
cos² x=1-(4/81)------> (81-4)/81-----> 77/81
cos x=√(77/81)

Sin 2x = 2 sin x cos x-------> 2*(2/9)*(√(77/81))----> (4/81)*√77---> 0.43

Sin 2x=0.43
so
cos² 2x=1-sin² 2x---------> 1-[0.43]²-----> 1-[0.1878]----> 0.81
cos² 2x=0.81-----------> cos 2x=0.9

tan 2x=sin 2x/cos 2x--------> tan 2x=0.43/0.9---------> tan 2x=0.48

the answers are
sin 2x=0.43
cos 2x=0.9
tan 2x=0.48

8 0

3 years ago

7th grade math I will give brainliest to right answer 6 = -4/5 s what is the value of s

alekssr [168]

Answer:

$\frac{-4}{5} s = 6\\-4s = 6*5\\-4s = 30\\s = \frac{30}{-4}$

s = 30/-4 or -7.5

8 0

3 years ago

Circumference of a circle

solmaris [256]

Answer:

50.27 units

Step-by-step explanation:

The formula for the circumference of a circle is:

C = $\pi$ d

where, d = diameter

Now plug in the values as shown below:

C = $\pi$ 16

C = 50.27

3 0

3 years ago