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3 years ago

7

Find the area of a right triangle with a base of 14 m and a height of 4 m.

2 answers:

olga nikolaevna [1]3 years ago

7 0

Answer:

28

Step-by-step explanation:

1/2 bh

1/2 x 14 x 4

7 x4

=28m

Veseljchak [2.6K]3 years ago

5 0

Answer:

area of a right triangle = ab / 2

base = 14 m

height = 4 m

area = 14 * 4 / 2 = 56/2 = 28

∴ area = 28 $m^{2}$

hope this answer helps you.....

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-11=-11a+33 what is the answer I’m stuck

Gnesinka [82]

A=4

The work behind it

-11a+33= -11
-33 -33

-11a=-44
Divide both sides by -11
-44/-11=a
A=4

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3 years ago

Six less than seven times a number is equal to-12

Vanyuwa [196]

(7x)-6=-12 7 times a number is 7x or 7 times any variable. Six less than that is subtracting by 6 then it all equals -12

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3 years ago

Alex777 [14]

Answer:

<h2>A)t=6.7</h2>

Step-by-step explanation:

<h3>to understand this</h3><h3>you need to know about:</h3>

quadratic equation
quadratic equation word problems
solving quadratic

<h3>given:</h3>

h(t) = -4t² + 12t + 100

<h3>to solve:</h3>

t

<h3>tips and formulas:</h3>

<u>the</u><u> </u><u>Ball</u><u> </u><u>will</u><u> </u><u>hit </u><u>the</u><u> ground</u><u> </u><u>when</u><u> </u><u>the</u><u> height</u><u> is</u><u> </u><u>0</u>
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<h3>let's solve: </h3>

$step - 1 : \: define$

$- 4 {t}^{2} + 12t + 100 = 0$

$step - 2 : \\ divide \: both \: sides \: by \: - 4$

${t}^{2} - 3t - 25 = 0$

$step - 3 : \\ solve \: the \: quadratic$

$formula : \\ x = \frac{ - b± \sqrt{ {b}^{2} - 4ac } }{2a}$

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$t = \frac{ - ( - 3)± \sqrt{ {( - 3)}^{2} - 4.1. - 25 } }{2.1}$

$t = \frac{ 3± \sqrt{ 9 + 100} }{2}$

$t = \frac{3 + \sqrt{ 109 } }{2}$

$t = \frac{3 - \sqrt{ 109 } }{2}$

$t = 6.7 \\ t = - 3.7$

$as \: we \: know \: time \: cannot \: be \: negative$

$\huge \therefore \: t = 6.7$

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3 years ago

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Assoli18 [71]

Answer:

x = 9 ± √14

Step-by-step explanation:

x² − 18x + 67 = 0

Move the constant to the other side:

x² − 18x = -67

Take half of -18, square it, and add to both sides.

(-18/2)² = (-9)² = 81

x² − 18x + 81 = -67 + 81

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Factor the perfect square:

(x − 9)² = 14

Solve for x:

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3 years ago

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zimovet [89]

Answer:

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Step-by-step explanation:

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2 years ago

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