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elena-14-01-66 [18.8K]
3 years ago
12

Type the correct answer in the box.

Mathematics
1 answer:
pantera1 [17]3 years ago
8 0

Answer:

-1-15i

Step-by-step explanation:

Plato

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Can someone help me please
Ede4ka [16]
What do you need help with I can’t read the thing
3 0
3 years ago
Find an equation of the line that passes through (-5,-7) and is parallel to 5x+9y+18=0. Give answer in slope intercept form
Kipish [7]

Answer:

y = - \frac{5}{9} x - \frac{88}{9}

Step-by-step explanation:

The equation of a line in slope- intercept form is

y = mx + c ( m is the slope and c the y- intercept )

Rearrange 5x + 9y + 18 = 0 into slope- intercept form

Subtract 5x + 18 from both sides

9y = - 5x - 18 ( divide all terms by 9 )

y = - \frac{5}{9} x - 2 ← in slope- intercept form

with m = - \frac{5}{9}

Parallel lines have equal slopes, thus

y = - \frac{5}{9} x + c ← is the partial equation

To find c substitute (- 5, - 7) into the partial equation

- 7 = \frac{25}{9} + c ⇒ c = - 7 - \frac{25}{9} = - \frac{88}{9}

y = - \frac{5}{9} x - \frac{88}{9} ← equation of line

5 0
3 years ago
Which property is demonstrated?<br> 16 + 7 + 9 = 7 + 9 + 16
Oxana [17]

B

Changing the order does not change the result of the equation

3 0
3 years ago
Read 2 more answers
Leena consumes 400 cal at breakfast and 350 cal at lunch. She consumes 2/3 of her daily calories at dinner. If X represents the
Zina [86]
1) Data:

Meal                calories consumed

Breakfast          400 cal
Lunch               350 cal
Dinner                x
                       ------------------
Total                 400 + 350 + x = 750 + x

2) Equation: <span>

She consumes 2/3 of her daily calories at dinner => (2/3)[750+x] = x

3) Analyze each statement:

</span><span>a) Lena consumed 1500 cal at dinner.

Solve the equation to find if the statement is true:
</span>
<span><span>(2/3)[750+x] = x</span>

2(750+x) = 3x

1500 + 2x = 3x

1500 = 3x - 2x

x = 1500

Conclusión: TRUE stament.

b) Do you equation 2/3 (x+400+350)=x can be used to model the situation.

That is the same equation that I found above.

Conclusion: TRUE statement

c) Lena consumed 500 cal at dinner.

She consumed (2/3) * 1500 = 500 cal

Conclusion: TRUE statement

d) Lena consumed 1000 cal at dinner.

No, we calculated that she consumed 500 cal at dinner.

Conclusion: FALSE statement

e) The equation 2/3(x)=x(400+350) can be used to model the situation.

No: (2/3) x = 500 and x(400+350) = 500*750 = 375,00, which are not equal.

Conclusion: FALSE statement.

f) The equation 2/3x(400+350)=x Can’t be used to model the situation

No: in that equation the variable x cancels out because it appears a factor at both sides.

</span>Conclusion: TRUE statement
3 0
4 years ago
Read 2 more answers
Can someone help me.
gtnhenbr [62]

Answer:

\large\boxed{x=\pm\sqrt{10}}

Step-by-step explanation:

x^2=10\Rightarrow x=\pm\sqrt{10}\\\\\text{because}\ (-\sqrt{10})^2=10\ \text{and}\ (\sqrt{10})^2=10.\\\\\text{used}\ (\sqrt{a})^2=a

5 0
4 years ago
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