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Stells [14]
3 years ago
15

Will mark Brainliest

Mathematics
1 answer:
olga55 [171]3 years ago
3 0

Answer:

10

Step-by-step explanation:

This means that 12/(2x+1)=8/(x+4). Cross multiply to get 16x + 8 = 12x + 48. Subtract 12x + 8 from both sides to get 4x = 40, so x = 10.

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Joe Casey, the star of the Placer County All-Star baseball team, has hit 11 home runs in the team's first thirty games. If he co
Lapatulllka [165]

Answer: 59.4

Step-by-step explanation:

We can solve this by using direct proportion where y = kx

y = number of games

x = number of home runs

k = constant of proportionality

Since y = kx

30 = 11k

k = 30/11

The home runs will he hit in a 162 game season will then be:

= 162 ÷ 30/11

= 162 × 11/30

= 59.4

8 0
3 years ago
Read 2 more answers
Apply the problem-solving techniques to solve the following
soldier1979 [14.2K]

Answer:

By 2020, there will be 1,147 species of birds left

Step-by-step explanation:

The general model for an exponential decrease is;

y = I(1 - r)^t

where in this case;

y is the number of bird species at a particular decade from the initial

I is the number of birds initially at 1990

r is the decrease percentage which is 1.5% per decade ; 1.5% = 1.5/100 = 0.015

t in this case will be the number of decades after the initial

Mathematically, a decade is 10 years

The difference between 2020 and 1990 is 30

The number of decades in 30 years is 30/10 = 3

so t will be 3 here

Substituting these values into the equation, we have

y = 1200(1-0.015)^3

y = 1200(0.985)^3 = 1,146.8

To the nearest whole number, this is 1,147

5 0
3 years ago
Find the measure of each angle
Kitty [74]

25)112*

26)68*

27)90*

28)90*

29)22*

30)158*

Answers. Brainliest in payment would be acceptable XD

4 0
4 years ago
Which property can be used to solve the equation?
nata0808 [166]

Step-by-step explanation:

It is multiplication property of equality. The goal is to get d by itself so what we do here is basically a process of

5d=75\\\\5d/5=75/5\\\\d=15

8 0
3 years ago
Read 2 more answers
Please help me out :)
arlik [135]

Answer:

\frac{\sqrt{17} }{7}

Step-by-step explanation:

Using the Pythagorean identity

sin²x + cos²x = 1, then

sinx = \sqrt{1-cos^2x}

Note that (\frac{4\sqrt{2} }{7})² = \frac{32}{49}

sinΘ = \sqrt{1-(32/49)}

        = \sqrt{\frac{17}{49} } = \frac{\sqrt{17} }{7}

5 0
3 years ago
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