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trasher [3.6K]
3 years ago
5

. Estimate the sum of 405 and 385 byrounding to the nearest hundred. Explain​

Mathematics
2 answers:
mars1129 [50]3 years ago
8 0

Answer:

800

Step-by-step explanation:

Round 405 to 400

Round 385 to 400

400+400=800

inn [45]3 years ago
8 0

Answer:

800 to the nearest hundred

Step-by-step explanation:

To Estimate the sum of 405 and 385, we will add 405 together with 385 I.e 405+385 to get 790.

Rounding 790 to a hundred is 800 since the second place value in 790 which is '9' is greater than 5, we will add 1 to the first place which is 7 to give us 8. This will change the second place value to '0' which make the value of 790 to be 800 to a hundred.

Note that 1 can only be added to a preceding value of a number if the succeeding value is greater than 5.

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because the number (x) has been decreased by 23 and is now 44.

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Values of x in the inequality -3x+1<7
mojhsa [17]

Answer:

The value of x is: x > -2

Step-by-step explanation:

The interval notation if you need it is (-2, ♾)

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PLEASE LED ME THE ANSWER<br> ILL GIVE YOU 20 POINTS
krok68 [10]

Answer:

DEC+DEF=180

DEC=180-116

DEC=64°

in triangle DCE

angle D+angle C+angle E=180

7y+6+4y+64=180

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3 0
3 years ago
What is the equation of the circle with center (16, - 12) and a radius of 5
eimsori [14]

Answer:

x^2+y^2-32x+24y+375=0

Step-by-step explanation:

Equation of circle with given centre (h,k) and radius=r is

(x-h)^2+(y-k)^2=r^2

Given centre are=(16, - 12) and radius= 5

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Answer

5 0
3 years ago
Solve 4 + 2 sinx= 14-8 sinx for 0° ≤ x ≤ 180
Oduvanchick [21]
<h2>Answer:</h2>

<u>x= 90°</u>.

<h2>Step-by-step explanation:</h2>

<h3>1. Write the expression.</h3>

4 + 2 sin(x)= 14-8 sin(x)

<h3>2. Subtract "4" from both sides of the equation.</h3>

-4+4 + 2 sin(x)= 14-8 sin(x)-4\\ \\2 sin(x)= 10-8 sin(x)

<h3>3. Add "8sin(x)" to both sides of the equation.</h3>

2 sin(x)+8 sin(x)= 10-8 sin(x)+8 sin(x)\\ \\10 sin(x)= 10

<h3>4. Divide both sides by 10.</h3>

\frac{10 sin(x)}{10} = \frac{10}{10} \\ \\sin(x)=1

<h3>5. Apply the arcsin of sin^-1 to both sides of the equation.</h3>

arcsin(sin(x))=arcsin(1)\\ \\x=90

<h3>6. Conclude.</h3>

<u>x= 90°</u>.

3 0
1 year ago
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