387420489You can search for any mathematical expression, using functions such as: sin, cos, sqrt, etc. You can find a complete list of functions here.RadDegx!Invsinlnπcoslogetan√AnsEXP<span>xy</span>()%AC789÷456×123−0.=<span>+
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When a=6,
2a - 3 = 2(6) - 3 = 12 - 3 = <em><u>9</u></em>
She originally started with 23.
We can tell this by working the equation backwards. Since she has 5 left and she had just given half to her brother, we know she had 10 a moment ago.
Before that, Mary had eaten a cookie. So we add 1 to the total and now have 11.
Before eating that cookie, she has given half to her sister, which would give her 22.
And before giving half to her sister, she had eaten the first one, which would give us 23 to start with.
Good morning,
Answer:
<h2>the number of true false questions : 6</h2><h2>the number of selected response : 4</h2>
Step-by-step explanation:
Let x represent the number of true false questions
and y represent the number of selected response
we have to solve this system to work out the number of each type of question
x+y=10 (1)
2x+3y=24 (2)
(2) - 2×(1) ⇒ y=4
now ,we replace y by 4 in equation (1)
x = 10 - 4 = 6.
:)
