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2 years ago

Help me ASAP please and I hate math

Mathematics

2 answers:

xxMikexx [17]2 years ago

7 0

The answer is y is greater y > -8

borishaifa [10]2 years ago

4 0

Answer:

Step-by-step explanation:

$-2y+1-8$

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Which is the graph. or y=1/2x + 1? please hurryyyyyy!

ololo11 [35]

Answer:

Graph 4

Step-by-step explanation:

It crosses at 1 (y-intercept) and has a slope of 1/2

6 0

2 years ago

In forming a contract, "consider" is

Goshia [24]

It depends on what contract you are signing if you are having doubts then yes but not then no!

5 0

2 years ago

Evaluate the following integral using trigonometric substitution.

wariber [46]

Answer:

Step-by-step explanation:

1. Given the integral function $\int\limits {\sqrt{a^{2} -x^{2} } } \, dx$ , using trigonometric substitution, the substitution that will be most helpful in this case is substituting x as $asin \theta$ i.e $x = a sin\theta$ .

All integrals in the form $\int\limits {\sqrt{a^{2} -x^{2} } } \, dx$ are always evaluated using the substitute given where 'a' is any constant.

From the given integral, $\int\limits {7\sqrt{49-x^{2} } } \, dx = \int\limits {7\sqrt{7^{2} -x^{2} } } \, dx$ where a = 7 in this case.

The substitute will therefore be $x = 7 sin\theta$

2.) Given $x = 7 sin\theta$

$\frac{dx}{d \theta} = 7cos \theta$

cross multiplying

$dx = 7cos\theta d\theta$

3.) Rewriting the given integral using the substiution will result into;

$\int\limits {7\sqrt{49-x^{2} } } \, dx \\= \int\limits {7\sqrt{7^{2} -x^{2} } } \, dx\\= \int\limits {7\sqrt{7^{2} -(7sin\theta)^{2} } } \, dx\\= \int\limits {7\sqrt{7^{2} -49sin^{2}\theta } } \, dx\\= \int\limits {7\sqrt{49(1-sin^{2}\theta)} } } \, dx\\= \int\limits {7\sqrt{49(cos^{2}\theta)} } } \, dx\\since\ dx = 7cos\theta d\theta\\= \int\limits {7\sqrt{49(cos^{2}\theta)} } } \, 7cos\theta d\theta\\= \int\limits {7\{7(cos\theta)} }}} \, 7cos\theta d\theta\\$

$= \int\limits343 cos^{2} \theta \, d\theta$

8 0

3 years ago

The equation and answer

dolphi86 [110]

Answer:

The correct answer is 47 degrees.

Step-by-step explanation:

Use cosine.

cos(x)= adj/hyp

cos(x)=19/28

x=arccos(19/28)

Use a calculator

x is approximately 47 degrees.

8 0

3 years ago

Charlene needs 7 pieces of brown thread. Each piece must be 1/3 yard long. How much thread should she buy?

SIZIF [17.4K]

Answer:

Step-by-step explanation:

4 0

3 years ago